Deadly blast at Ariana Grande concert in Manchester, England

Yahoo News Photo Staff

British security forces raided an apartment building on May 24 in central Manchester as they investigated “a network” of people allegedly behind the city’s concert bombing. Hundreds of soldiers were sent to secure key sites across the country, including Buckingham Palace and the British Parliament at Westminster.

Home Secretary Amber Rudd said the bomber, Salman Abedi, “likely” did not act alone when he killed 22 people and wounded scores at an Ariana Grande concert Monday night, May 22, in Manchester. She said he had been known to security forces “up to a point.”

Abedi, a 22-year-old British citizen born to Libyan parents who grew up around Manchester, died in the attack. (AP)

See more updates on our LIVE BLOG. >>>

____

See more news-related photo galleries and follow us on Yahoo News Photo Tumblr.

<p>People look at flowers and tributes left in St Ann’s Square in Manchester, England, Monday May 29, 2017, exactly a week after the Manchester Arena terror attack took place. Over 20 people were killed in the blast with many more injured. (Owen Humphreys/PA via AP) </p>
Deadly blast at Ariana Grande concert in Manchester, England

People look at flowers and tributes left in St Ann’s Square in Manchester, England, Monday May 29, 2017, exactly a week after the Manchester Arena terror attack took place. Over 20 people were killed in the blast with many more injured. (Owen Humphreys/PA via AP)

<p>A worker bee adorns the side of Bollington White Nancy to remember those killed and injured in the Manchester Arena attack, on May 30, 2017 in Macclesfield, England. White Nancy overlooks the hills and countryside in East Chesire with views across the plain to Manchester and can be seen for miles. White Nancy was built in 1815 as a summer house, and memorial to the the battle of Waterloo. An explosion occurred at Manchester Arena on the evening of May 22, Killing 22 and injuring many more. (Christopher Furlong/Getty Images) </p>
Salman Abedi is seen on he night he committed the attack in Manchester

A worker bee adorns the side of Bollington White Nancy to remember those killed and injured in the Manchester Arena attack, on May 30, 2017 in Macclesfield, England. White Nancy overlooks the hills and countryside in East Chesire with views across the plain to Manchester and can be seen for miles. White Nancy was built in 1815 as a summer house, and memorial to the the battle of Waterloo. An explosion occurred at Manchester Arena on the evening of May 22, Killing 22 and injuring many more. (Christopher Furlong/Getty Images)

<p>People hold a minute of silence in a square in central Manchester, England, Thursday, May 25, 2017, after the suicide attack at an Ariana Grande concert that left more than 20 people dead and many more injured, as it ended on Monday night at the Manchester Arena. (AP Photo/Emilio Morenatti) </p>
Deadly blast at Ariana Grande concert in Manchester, England

People hold a minute of silence in a square in central Manchester, England, Thursday, May 25, 2017, after the suicide attack at an Ariana Grande concert that left more than 20 people dead and many more injured, as it ended on Monday night at the Manchester Arena. (AP Photo/Emilio Morenatti)

<p>Britain’s Queen Elizabeth II, right, speaks to Amy Barlow, 12, from Rawtenstall, Lancashire, left, and her mother, Kathy, as she visits the Royal Manchester Children’s Hospital in Manchester England, to meet victims of the terror attack in the city earlier this week and to thank members of staff who treated them Thursday May 25, 2017. (Peter Byrne/Pool via AP) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Britain’s Queen Elizabeth II, right, speaks to Amy Barlow, 12, from Rawtenstall, Lancashire, left, and her mother, Kathy, as she visits the Royal Manchester Children’s Hospital in Manchester England, to meet victims of the terror attack in the city earlier this week and to thank members of staff who treated them Thursday May 25, 2017. (Peter Byrne/Pool via AP)

<p>Manchester Arena bomber, Salman Abedi (handout) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Manchester Arena bomber, Salman Abedi (handout)

<p>CCTV image of Salman Abedi in an unknown location of the city center in Manchester, England on May 22, 2017. (Greater Manchester Police via AP) </p>
Salman Abedi is seen on he night he committed the attack in Manchester

CCTV image of Salman Abedi in an unknown location of the city center in Manchester, England on May 22, 2017. (Greater Manchester Police via AP)

<p>Salman Abedi, the bomber behind the Manchester suicide bombing, is seen in this image taken from CCTV on the night he committed the attack in this handout photo released to Reuters on May 27, 2017. (Greater Manchester Police/Handout via Reuters) </p>
Salman Abedi is seen on he night he committed the attack in Manchester

Salman Abedi, the bomber behind the Manchester suicide bombing, is seen in this image taken from CCTV on the night he committed the attack in this handout photo released to Reuters on May 27, 2017. (Greater Manchester Police/Handout via Reuters)

<p>An armed soldier and an armed police officer patrol outside the Houses of Parliament on May 24, 2017 in London, England. 984 military personnel are being deployed around the country as the UK terror status is elevated to Critical in the wake of the Manchester Arena Terror Attack which took place on Monday night. (Carl Court/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

An armed soldier and an armed police officer patrol outside the Houses of Parliament on May 24, 2017 in London, England. 984 military personnel are being deployed around the country as the UK terror status is elevated to Critical in the wake of the Manchester Arena Terror Attack which took place on Monday night. (Carl Court/Getty Images)

<p>A woman picks a newspaper reporting the news on the suicide attack at a concert by Ariana Grande that killed more than 20 people as it ended Monday night in central Manchester, Britain, Wednesday, May 24, 2017. (AP Photo/Emilio Morenatti) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A woman picks a newspaper reporting the news on the suicide attack at a concert by Ariana Grande that killed more than 20 people as it ended Monday night in central Manchester, Britain, Wednesday, May 24, 2017. (AP Photo/Emilio Morenatti)

<p>Thousands of people across the country have paid tribute to the victims of the attack. </p>
Deadly blast at Ariana Grande concert in Manchester, England

Thousands of people across the country have paid tribute to the victims of the attack.

<p>Armed police officers patrol a police cordon near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Kirsty Wigglesworth) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Armed police officers patrol a police cordon near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Kirsty Wigglesworth)

<p>People stand by flowers offered for the victims of a suicide attack at a concert by Ariana Grande that killed more than 20 people Monday night in central Manchester, Britain, Wednesday, May 24, 2017. (AP Photo/Emilio Morenatti) </p>
Deadly blast at Ariana Grande concert in Manchester, England

People stand by flowers offered for the victims of a suicide attack at a concert by Ariana Grande that killed more than 20 people Monday night in central Manchester, Britain, Wednesday, May 24, 2017. (AP Photo/Emilio Morenatti)

<p>Members of the public pause to look at floral tributes and messages as the working day begins on May 24, 2017 in Manchester, England. (Jeff J Mitchell/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Members of the public pause to look at floral tributes and messages as the working day begins on May 24, 2017 in Manchester, England. (Jeff J Mitchell/Getty Images)

<p>People pray after a vigil in Albert Square, Manchester, England, Tuesday May 23, 2017, the day after the suicide attack at an Ariana Grande concert that left 22 people dead as it ended on Monday night. (AP Photo/Emilio Morenatti) </p>
Deadly blast at Ariana Grande concert in Manchester, England

People pray after a vigil in Albert Square, Manchester, England, Tuesday May 23, 2017, the day after the suicide attack at an Ariana Grande concert that left 22 people dead as it ended on Monday night. (AP Photo/Emilio Morenatti)

<p>People attendn a vigil for the victims of an attack on concert goers at Manchester Arena, in central Manchester, Britain on May 23, 2017. (Jon Super/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

People attendn a vigil for the victims of an attack on concert goers at Manchester Arena, in central Manchester, Britain on May 23, 2017. (Jon Super/Reuters)

<p>People attend a vigil in Albert Square, Manchester, England, Tuesday May 23, 2017, the day after the suicide attack at an Ariana Grande concert that left 22 people dead as it ended on Monday night. (AP Photo/Kirsty Wigglesworth) </p>
Deadly blast at Ariana Grande concert in Manchester, England

People attend a vigil in Albert Square, Manchester, England, Tuesday May 23, 2017, the day after the suicide attack at an Ariana Grande concert that left 22 people dead as it ended on Monday night. (AP Photo/Kirsty Wigglesworth)

<p>Greater Manchester Police Chief Constable Ian Hopkins speaks to the media in Manchester Tuesday May 23, 2017. Police say they are treating an explosion at an Ariana Grande concert in northern England as terrorism. (Peter Byrne/PA via AP) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Greater Manchester Police Chief Constable Ian Hopkins speaks to the media in Manchester Tuesday May 23, 2017. Police say they are treating an explosion at an Ariana Grande concert in northern England as terrorism. (Peter Byrne/PA via AP)

<p>A woman holds a placard as they take part in a vigil for the victims of an attack on concert goers at Manchester Arena, in central Manchester, Britain on May 23, 2017. (Peter Nicholls/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A woman holds a placard as they take part in a vigil for the victims of an attack on concert goers at Manchester Arena, in central Manchester, Britain on May 23, 2017. (Peter Nicholls/Reuters)

<p>A man stands inside Didsbury mosque in Manchester, Britain on May 23, 2017. (Stefan Wermuth/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A man stands inside Didsbury mosque in Manchester, Britain on May 23, 2017. (Stefan Wermuth/Reuters)

<p>Police officers stand outside a residential property near to where a man was arrested in the Chorlton area of Manchester, Britain on May 23, 2017. (Stefan Wermuth/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Police officers stand outside a residential property near to where a man was arrested in the Chorlton area of Manchester, Britain on May 23, 2017. (Stefan Wermuth/Reuters)

<p>A woman lays flowers for the victims of the Manchester Arena attack, in central Manchester, Britain on May 23, 2017. (Darren Staples/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A woman lays flowers for the victims of the Manchester Arena attack, in central Manchester, Britain on May 23, 2017. (Darren Staples/Reuters)

<p>Police forensic investigators search the property of Salmon Abedi England, Tuesday, May 23, 2017. Official records show that Salmon Abedi was registered as living at the Manchester house raided by armed police investigating Monday night’s deadly concert blast. The electoral register shows that Abedi – named by U.S. officials as the suspect in the suicide bombing at an Ariana Grande concert – lived at the house in Fallowfield in southern Manchester where police carried out a controlled explosion Tuesday. (Danny Lawson/PA via AP) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Police forensic investigators search the property of Salmon Abedi England, Tuesday, May 23, 2017. Official records show that Salmon Abedi was registered as living at the Manchester house raided by armed police investigating Monday night’s deadly concert blast. The electoral register shows that Abedi – named by U.S. officials as the suspect in the suicide bombing at an Ariana Grande concert – lived at the house in Fallowfield in southern Manchester where police carried out a controlled explosion Tuesday. (Danny Lawson/PA via AP)

<p>Police investigators work at residential property in south Manchester, Britain on May 23, 2017. (Stefan Wermuth/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Police investigators work at residential property in south Manchester, Britain on May 23, 2017. (Stefan Wermuth/Reuters)

<p>Mounted police officers on patrol in Manchester, England, Tuesday May 23, 2017, the day after the suicide attack at an Ariana Grande concert that left 22 people dead as it ended on Monday night. (AP Photo/Emilio Morenatti) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Mounted police officers on patrol in Manchester, England, Tuesday May 23, 2017, the day after the suicide attack at an Ariana Grande concert that left 22 people dead as it ended on Monday night. (AP Photo/Emilio Morenatti)

<p>A woman waits to take part in a vigil for the victims of an attack on concert goers at Manchester Arena, in central Manchester, Britain on May 23, 2017. (Darren Staples/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A woman waits to take part in a vigil for the victims of an attack on concert goers at Manchester Arena, in central Manchester, Britain on May 23, 2017. (Darren Staples/Reuters)

<p>Queen Elizabeth II and Prince Philip, Duke of Edinburgh observe a minute’s silence in honour of the victims of the attack at Manchester Arena at the start of a garden party at Buckingham Palace on May 23, 2017 in London, England. (Dominic Lipinski – WPA Pool/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Queen Elizabeth II and Prince Philip, Duke of Edinburgh observe a minute’s silence in honour of the victims of the attack at Manchester Arena at the start of a garden party at Buckingham Palace on May 23, 2017 in London, England. (Dominic Lipinski – WPA Pool/Getty Images)

<p>A man walks past a sign in Manchester, Britain on May 23, 2017. (Stefan Wermuth/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A man walks past a sign in Manchester, Britain on May 23, 2017. (Stefan Wermuth/Reuters)

<p>Armed and uniformed police officers stand outside a residential property near to where a man was arrested in the Chorlton area of Manchester, Britain on May 23, 2017. (Stefan Wermuth/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Armed and uniformed police officers stand outside a residential property near to where a man was arrested in the Chorlton area of Manchester, Britain on May 23, 2017. (Stefan Wermuth/Reuters)

<p>The Union flag flies at half mast above the Department for Culture Media and Sport on Whitehall on May 23, 2017 in London, England. (Jack Taylor/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

The Union flag flies at half mast above the Department for Culture Media and Sport on Whitehall on May 23, 2017 in London, England. (Jack Taylor/Getty Images)

<p>A man writes a message on the pavement in central Manchester, Britain on May 23, 2017. (Darren Staples/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A man writes a message on the pavement in central Manchester, Britain on May 23, 2017. (Darren Staples/Reuters)

<p>Armed police patrol near Manchester Arena following a deadly terror attack in Manchester, northwest England on May 23, 2017. (Oli Scarff/AFP/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Armed police patrol near Manchester Arena following a deadly terror attack in Manchester, northwest England on May 23, 2017. (Oli Scarff/AFP/Getty Images)

<p>People affected by the deadly terror attack at Manchester Arena look out from a hotel window in Manchester, northwest England on May 23, 2017. (Oli Scarff/AFP/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

People affected by the deadly terror attack at Manchester Arena look out from a hotel window in Manchester, northwest England on May 23, 2017. (Oli Scarff/AFP/Getty Images)

<p>A woman and a young girl wearing a t-shirt of U.S. singer Ariana Grande talks to police near Manchester Arena following a deadly terror attack in Manchester, northwest England on May 23, 2017. (Oli Scarff/AFP/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A woman and a young girl wearing a t-shirt of U.S. singer Ariana Grande talks to police near Manchester Arena following a deadly terror attack in Manchester, northwest England on May 23, 2017. (Oli Scarff/AFP/Getty Images)

<p>The first floral tributes to the victims of the terrorist attack are placed on the empty streets on Shudehill, May 23, 2017 in Manchester, England. (Christopher Furlong/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

The first floral tributes to the victims of the terrorist attack are placed on the empty streets on Shudehill, May 23, 2017 in Manchester, England. (Christopher Furlong/Getty Images)

<p>Crowds of people wait outside after police avacuated the Arndale Centre on May 23, 2017 in Manchester, England. (Christopher Furlong/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Crowds of people wait outside after police avacuated the Arndale Centre on May 23, 2017 in Manchester, England. (Christopher Furlong/Getty Images)

<p>A man carries a young girl on his shoulders near Victoria station in Manchester, northwest England on May 23, 2017. (Oli Scarff/AFP/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A man carries a young girl on his shoulders near Victoria station in Manchester, northwest England on May 23, 2017. (Oli Scarff/AFP/Getty Images)

<p>A Manchester Evening News vendor sells newspapers showing headlines from the terrorist attack on May 23, 2017 in Manchester, England. (Leon Neal/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A Manchester Evening News vendor sells newspapers showing headlines from the terrorist attack on May 23, 2017 in Manchester, England. (Leon Neal/Getty Images)

<p>Police forensic officers leave the Manchester Arena as they investigate the scene of an explosion on May 23, 2017 in Manchester, England. (Dave Thompson/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Police forensic officers leave the Manchester Arena as they investigate the scene of an explosion on May 23, 2017 in Manchester, England. (Dave Thompson/Getty Images)

<p>Ariana Grande concert attendees Karen Moore and her daughter Molly Steed, aged 14, from Derby, leave the Park Inn where they were given refuge after last nights explosion at Manchester Arena on May 23, 2017 in Manchester, England. (Christopher Furlong/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Ariana Grande concert attendees Karen Moore and her daughter Molly Steed, aged 14, from Derby, leave the Park Inn where they were given refuge after last nights explosion at Manchester Arena on May 23, 2017 in Manchester, England. (Christopher Furlong/Getty Images)

<p>Police guard close to the Manchester Arena in Manchester, Britain, Tuesday May 23, 2017, a day after an explosion. (Peter Byrne/PA via AP) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Police guard close to the Manchester Arena in Manchester, Britain, Tuesday May 23, 2017, a day after an explosion. (Peter Byrne/PA via AP)

<p>Salman Abedi detonated a bomb at Manchester Arena on Monday (Picture: Andrew Yates/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Salman Abedi detonated a bomb at Manchester Arena on Monday (Picture: Andrew Yates/Reuters)

<p>People arrive at a support center at Manchester City’s Etihad Stadium, Manchester, Britain, May 23, 2017. (Jon Super/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

People arrive at a support center at Manchester City’s Etihad Stadium, Manchester, Britain, May 23, 2017. (Jon Super/Reuters)

<p>Forensics investigators work at the Manchester Arena in Manchester, Britain May 23, 2017. (Darren Staples/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Forensics investigators work at the Manchester Arena in Manchester, Britain May 23, 2017. (Darren Staples/Reuters)

<p>A police officer with a sniffer dog patrols near the Manchester Arena in Manchester, England Tuesday, May 23, 2017.(Danny Lawson/PA via AP) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A police officer with a sniffer dog patrols near the Manchester Arena in Manchester, England Tuesday, May 23, 2017.(Danny Lawson/PA via AP)

<p>People walk out of a support center at Manchester City’s Etihad Stadium, Manchester, Britain, May 23, 2017. (Jon Super/Reuters)) </p>
Deadly blast at Ariana Grande concert in Manchester, England

People walk out of a support center at Manchester City’s Etihad Stadium, Manchester, Britain, May 23, 2017. (Jon Super/Reuters))

<p>A man looks out of a window at a support center at Manchester City’s Etihad Stadium, Manchester, Britain, May 23, 2017. (Jon Super/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A man looks out of a window at a support center at Manchester City’s Etihad Stadium, Manchester, Britain, May 23, 2017. (Jon Super/Reuters)

<p>Police avacuate the Arndale Center on May 23, 2017 in Manchester, England. (Christopher Furlong/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Police avacuate the Arndale Center on May 23, 2017 in Manchester, England. (Christopher Furlong/Getty Images)

<p>People rush out of the Arndale shopping center as it is evacuated in Manchester, Britain May 23, 2017. (Darren Staples/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

People rush out of the Arndale shopping center as it is evacuated in Manchester, Britain May 23, 2017. (Darren Staples/Reuters)

<p>Fans leave the Park Inn hotel in central Manchester, England Tuesday May 23 2017. (AP Photo/Rui Vieira) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Fans leave the Park Inn hotel in central Manchester, England Tuesday May 23 2017. (AP Photo/Rui Vieira)

<p>A police officer carries a floral tribute close to the Manchester Arena, the morning after a suicide bomber killed more than a dozen people as an explosion tore through fans leaving a pop concert in Manchester England Tuesday May 23, 2017. (Danny Lawson/PA via AP) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A police officer carries a floral tribute close to the Manchester Arena, the morning after a suicide bomber killed more than a dozen people as an explosion tore through fans leaving a pop concert in Manchester England Tuesday May 23, 2017. (Danny Lawson/PA via AP)

<p>Fan leaves the Park Inn hotel in central Manchester, England, Tuesday, May 23, 2017. (AP Photo/Rui Vieira) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Fan leaves the Park Inn hotel in central Manchester, England, Tuesday, May 23, 2017. (AP Photo/Rui Vieira)

<p>Armed police patrol the streets near to Manchester Arena in central Manchester, England, Tuesday May 23, 2017. (AP Photo/Rui Vieira) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Armed police patrol the streets near to Manchester Arena in central Manchester, England, Tuesday May 23, 2017. (AP Photo/Rui Vieira)

<p>A member of the public reacts as police evacuate the Arndale shopping center, in Manchester, England Tuesday May 23, 2017, the day after an apparent suicide bomber attacked an Ariana Grande concert as it ended Monday night, killing over a dozen of people among a panicked crowd of young concertgoers. (AP Photo/Rui Vieira) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A member of the public reacts as police evacuate the Arndale shopping center, in Manchester, England Tuesday May 23, 2017, the day after an apparent suicide bomber attacked an Ariana Grande concert as it ended Monday night, killing over a dozen of people among a panicked crowd of young concertgoers. (AP Photo/Rui Vieira)

<p>Forensic personnel stand on a bridge which links Victoria railway station to the Manchester Arena in central Manchester, Britain, Tuesday May 23 2017. (AP Photo/Rui Vieira) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Forensic personnel stand on a bridge which links Victoria railway station to the Manchester Arena in central Manchester, Britain, Tuesday May 23 2017. (AP Photo/Rui Vieira)

<p>British Prime Minister Theresa May departs 10 Downing Street, London, to go to Manchester, Tuesday May 23, 2017. (AP Photo/Matt Dunham) </p>
Deadly blast at Ariana Grande concert in Manchester, England

British Prime Minister Theresa May departs 10 Downing Street, London, to go to Manchester, Tuesday May 23, 2017. (AP Photo/Matt Dunham)

<p>Armed police patrol the streets the morning after a terrorist attack on May 23, 2017 in Manchester, England. (Dave Thompson/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Armed police patrol the streets the morning after a terrorist attack on May 23, 2017 in Manchester, England. (Dave Thompson/Getty Images)

<p>A woman looks upset after police evacuated the Arndale Center on May 23, 2017 in Manchester, England. (Photo: Christopher Furlong/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A woman looks upset after police evacuated the Arndale Center on May 23, 2017 in Manchester, England. (Photo: Christopher Furlong/Getty Images)

<p>A person is wheeled away on a stretcher at Victoria Railway Station close to the Manchester Arena on May 23, 2017 in Manchester, England. (Dave Thompson/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A person is wheeled away on a stretcher at Victoria Railway Station close to the Manchester Arena on May 23, 2017 in Manchester, England. (Dave Thompson/Getty Images)

<p>Armed police work at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at an Ariana Grande concert in northern England, police said. A representative said the singer was not injured. (Peter Byrne/PA via AP) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Armed police work at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at an Ariana Grande concert in northern England, police said. A representative said the singer was not injured. (Peter Byrne/PA via AP)

<p>Emergency services work at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at an Ariana Grande concert in northern England, police said. A representative said the singer was not injured. (Peter Byrne/PA via AP) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Emergency services work at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at an Ariana Grande concert in northern England, police said. A representative said the singer was not injured. (Peter Byrne/PA via AP)

<p>Police escort members of the public from the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Christopher Furlong/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Police escort members of the public from the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Christopher Furlong/Getty Images)

<p>Emergency services arrive close to the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Dave Thompson/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Emergency services arrive close to the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Dave Thompson/Getty Images)

<p>Emergency services work at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at an Ariana Grande concert in northern England, police said. A representative said the singer was not injured. (Peter Byrne/PA via AP) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Emergency services work at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at an Ariana Grande concert in northern England, police said. A representative said the singer was not injured. (Peter Byrne/PA via AP)

<p>Police escort members of the public from the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Christopher Furlong/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Police escort members of the public from the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Christopher Furlong/Getty Images)

<p>Members of the public are escorted from the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Dave Thompson/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Members of the public are escorted from the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Dave Thompson/Getty Images)

<p>British police guard the entrance to the Manchester Arena stadium in Manchester, United Kingdom on May 23, 2017. A large explosion was reported earlier in the evening and British police confirmed that at least 19 killed and many other wounded at American singer Ariana Grande concert at Manchester Arena. UK officials treating Manchester Arena explosion as possible terrorist incident. (Lindsey Parnaby/Anadolu Agency/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

British police guard the entrance to the Manchester Arena stadium in Manchester, United Kingdom on May 23, 2017. A large explosion was reported earlier in the evening and British police confirmed that at least 19 killed and many other wounded at American singer Ariana Grande concert at Manchester Arena. UK officials treating Manchester Arena explosion as possible terrorist incident. (Lindsey Parnaby/Anadolu Agency/Getty Images)

<p>Armed police respond after reports of an explosion at Manchester Arena during an Ariana Grande concert in Manchester, England, Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at the concert in northern England, police said. A representative said the singer was not injured. (Peter Byrne/PA via AP) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Armed police respond after reports of an explosion at Manchester Arena during an Ariana Grande concert in Manchester, England, Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at the concert in northern England, police said. A representative said the singer was not injured. (Peter Byrne/PA via AP)

Deadly blast at Ariana Grande concert in Manchester, England
<p>Armed police stand guard at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Police says there are “a number of fatalities” after reports of an explosion at an Ariana Grande concert in northern England. (Peter Byrne/PA via AP) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Armed police stand guard at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Police says there are “a number of fatalities” after reports of an explosion at an Ariana Grande concert in northern England. (Peter Byrne/PA via AP)

<p>An ambulance drives away from the Manchester Arena, where U.S. singer Ariana Grande had been performing, in Manchester, northern England, Britain, May 23, 2017. (Andrew Yates/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

An ambulance drives away from the Manchester Arena, where U.S. singer Ariana Grande had been performing, in Manchester, northern England, Britain, May 23, 2017. (Andrew Yates/Reuters)

<p>Police and fans close to the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Dave Thompson/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Police and fans close to the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Dave Thompson/Getty Images)

<p>Armed police officers stand next to a police cordon outside the Manchester Arena, where U.S. singer Ariana Grande had been performing, in Manchester, northern England, Britain, May 23, 2017. (Andrew Yates/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Armed police officers stand next to a police cordon outside the Manchester Arena, where U.S. singer Ariana Grande had been performing, in Manchester, northern England, Britain, May 23, 2017. (Andrew Yates/Reuters)

<p>Emergency services personnel speak to people outside Manchester Arena after reports of an explosion at the venue during an Ariana Grande concert in Manchester, England, Monday, May 22, 2017. Several people have died following an explosion Monday night at an Ariana Grande concert in northern England, police and witnesses said. The singer was not injured, according to a representative. (Peter Byrne/PA via AP) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Emergency services personnel speak to people outside Manchester Arena after reports of an explosion at the venue during an Ariana Grande concert in Manchester, England, Monday, May 22, 2017. Several people have died following an explosion Monday night at an Ariana Grande concert in northern England, police and witnesses said. The singer was not injured, according to a representative. (Peter Byrne/PA via AP)

<p>Members of the public are escorted from the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Dave Thompson/Getty Images) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Members of the public are escorted from the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Dave Thompson/Getty Images)

<p>At least 22 people were killed in the attack. </p>
Deadly blast at Ariana Grande concert in Manchester, England

At least 22 people were killed in the attack.

<p>A police officer talks to locals outside the Manchester Arena, where U.S. singer Ariana Grande had been performing, in Manchester, northern England, Britain May 22, 2017. (Jon Super/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A police officer talks to locals outside the Manchester Arena, where U.S. singer Ariana Grande had been performing, in Manchester, northern England, Britain May 22, 2017. (Jon Super/Reuters)

<p>A police vehicle is seen outside the Manchester Arena, where U.S. singer Ariana Grande had been performing in Manchester, northern England, Britain May 23, 2017. (Andrew Yates/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A police vehicle is seen outside the Manchester Arena, where U.S. singer Ariana Grande had been performing in Manchester, northern England, Britain May 23, 2017. (Andrew Yates/Reuters)

<p>Concert goers react after fleeing the Manchester Arena in northern England where U.S. singer Ariana Grande had been performing in Manchester, Britain, May 22, 2017. (Jon Super/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Concert goers react after fleeing the Manchester Arena in northern England where U.S. singer Ariana Grande had been performing in Manchester, Britain, May 22, 2017. (Jon Super/Reuters)

<p>A police van and an ambulance are seen outside the Manchester Arena, where U.S. singer Ariana Grande had been performing, in Manchester, northern England, Britain May 22, 2017. (Jon Super/Reuters) </p>
Deadly blast at Ariana Grande concert in Manchester, England

A police van and an ambulance are seen outside the Manchester Arena, where U.S. singer Ariana Grande had been performing, in Manchester, northern England, Britain May 22, 2017. (Jon Super/Reuters)

<p>Still image from video shows people fleeing Manchester Arena in northern England where U.S. singer Ariana Grande had been performing in Manchester, Britain, May 22, 2017. (TWITTER.COM/HANNAWWH/via Reuters TV) </p>
Deadly blast at Ariana Grande concert in Manchester, England

Still image from video shows people fleeing Manchester Arena in northern England where U.S. singer Ariana Grande had been performing in Manchester, Britain, May 22, 2017. (TWITTER.COM/HANNAWWH/via Reuters TV)

Deadly blast at Ariana Grande concert in Manchester, England
Deadly blast at Ariana Grande concert in Manchester, England
Deadly blast at Ariana Grande concert in Manchester, England
<p>In this Aug. 28, 2016 file photo, Ariana Grande arrives at the MTV Video Music Awards in New York. Police say there are “a number of fatalities” after reports of an explosion at an Ariana Grande concert at Manchester Arena in northern England on Monday, May 22, 2017.. (Chris Pizzello/Invision/AP, File) </p>
Deadly blast at Ariana Grande concert in Manchester, England

In this Aug. 28, 2016 file photo, Ariana Grande arrives at the MTV Video Music Awards in New York. Police say there are “a number of fatalities” after reports of an explosion at an Ariana Grande concert at Manchester Arena in northern England on Monday, May 22, 2017.. (Chris Pizzello/Invision/AP, File)

What to read next