Van strikes pedestrians outside of London mosque

At least one person died and 10 were injured when a van plowed into a crowd gathered outside a London mosque after prayers.

London Mayor Sadiq Khan said police were responding to a “horrific terrorist attack.”

Prime Minister Theresa May called it a “potential terrorist attack” and said, “All my thoughts are with those who have been injured, their loved ones and the emergency services on the scene.”

The Metropolitan Police called it a “terrorist attack” and said an investigation was being carried out by the Counter Terrorism Command. “This was an attack on London and all Londoners and we should all stand together against extremists whatever their cause,” Neil Basu, Senior National Coordinator for Counter Terrorism, said.

Some witnesses said there were a total of three “attackers,” but police said they arrested a 48-year-old man at the scene on suspicion of attempted murder and that no other suspects had been identified.

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Van strikes pedestrians outside of London mosque

Police officers guard the scene after a vehicle collided with pedestrians in the Finsbury Park neighbourhood of North London, Britain, June 19, 2017. (Photo: Neil Hall/Reuters)

Van strikes pedestrians outside of London mosque

A priest leaves flowers near the scene of an attack where a van was driven at Muslims outside a mosque in Finsbury Park in North London, Britain, June 19, 2017. (Photo: Hannah McKay/Reuters)

Van strikes pedestrians outside of London mosque

A police forensics officer walks from the scene where a van is believed to have been involved in an incident near Finsbury Park Mosque in which the van ploughed into pedestrians, on June 19, 2017, in London, England. (Photo: Carl Court/Getty Images)

Van strikes pedestrians outside of London mosque

A major police and emergency services operation with firearms officers in attendance is underway near Finsbury Park Mosque following reports of Several people being injured after a van struck a crowd of pedestrians on June 19, 2017 in London, England. (Photo: Paul Davey / Barcroft Images / Barcroft Media via Getty Images)

Van strikes pedestrians outside of London mosque

A forensic tent is erected near the scene where a van struck pedestrians in Finsbury Park, north London, Monday, June 19, 2017. (Photo: Alastair Grant/AP)

Van strikes pedestrians outside of London mosque

A police forensics officer works in a road near an incident near Finsbury Park Mosque in which a van ploughed into pedestrians, is pictured on June 19, 2017 in London, England. (Photo: Carl Court/Getty Images)

Van strikes pedestrians outside of London mosque

A forensic officer leaves the scene where a van struck pedestrians in Finsbury Park, north London, Monday, June 19, 2017. (Photo: Alastair Grant/AP)

Van strikes pedestrians outside of London mosque

A police officer informs a member of the public that the route is closed near the scene where a van struck pedestrians in Finsbury Park, north London, Monday, June 19, 2017. (Photo: Alastair Grant/AP)

Van strikes pedestrians outside of London mosque

A forensic officer stands at the scene with a van near Finsbury Park station after the vehicle struck pedestrians in north London, Monday June 19, 2017. Police said a man who was driving the car has been arrested and taken to a hospital as a precaution. (Photo: Tim Ireland/AP)

Van strikes pedestrians outside of London mosque

Police officers man on Fonthill road near Finsbury Park station after a vehicle struck pedestrians in north London, Monday, June 19, 2017. (Photo: Tim Ireland/AP)

Van strikes pedestrians outside of London mosque

Men pray after a vehicle collided with pedestrians near a mosque in the Finsbury Park neighborhood of North London, Britain June 19, 2017. (Neil Hall/Reuters)

Van strikes pedestrians outside of London mosque

An armed police officer attends to the scene after a vehicle collided with pedestrians in the Finsbury Park neighborhood of North London, Britain June 19, 2017. (Neil Hall/Reuters)

Van strikes pedestrians outside of London mosque

Police officers man a cordon near the Seven Sisters Road at Finsbury Park where a vehicle struck pedestrians in London Monday, June 19, 2017. Police say a vehicle struck pedestrians on a road in north London, leaving several casualties and one person has been arrested. (Yui Mok/PA via AP)

Van strikes pedestrians outside of London mosque

Police officers attend to the scene after a vehicle collided with pedestrians near a mosque in the Finsbury Park neighborhood of North London, Britain June 19, 2017. (Neil Hall/Reuters)

Van strikes pedestrians outside of London mosque

Police officers attend to the scene after a vehicle collided with pedestrians in the Finsbury Park neighborhood of North London, Britain June 19, 2017. (Neil Hall/Reuters)

Van strikes pedestrians outside of London mosque

Muslims pray on a sidewalk in the Finsbury Park area of north London after a vehichle hit pedestrians, on June 19, 2017.
One person has been arrested after a vehicle hit pedestrians in north London, injuring several people, police said Monday, as Muslim leaders said worshippers were mown down after leaving a mosque. (Daniel Leal Olivias/AFP/Getty Images)

Van strikes pedestrians outside of London mosque

Armed police officers attend to the scene after a vehicle collided with pedestrians in the Finsbury Park neighborhood of North London, Britain June 19, 2017. (Neil Hall/Reuters)

Van strikes pedestrians outside of London mosque

Police officers talk with local people at the Finsbury Park in north London, where a vehicle struck pedestrians Monday, June 19, 2017. A vehicle struck pedestrians near a mosque in north London early Monday morning, causing several casualties, police said. (Yui Mok/PA via AP)

Van strikes pedestrians outside of London mosque

Police officers attend to the scene after a vehicle collided with pedestrians near a mosque in the Finsbury Park neighborhood of North London, Britain June 19, 2017. (Neil Hall/Reuters)

Van strikes pedestrians outside of London mosque

Police man a cordon at Finsbury Park where a vehicle struck pedestrians in London Monday, June 19, 2017. Police say a vehicle struck pedestrians on a road in north London, leaving several casualties and one person has been arrested. (Yui Mok/PA via AP)

Van strikes pedestrians outside of London mosque

A man prays after a vehicle collided with pedestrians near a mosque in the Finsbury Park neighborhood of North London, Britain June 19, 2017. (Neil Hall/Reuters)

Van strikes pedestrians outside of London mosque

Police officers attend to the scene after a vehicle collided with pedestrians in the Finsbury Park neighborhood of North London, Britain June 19, 2017. (Thomas Van Hulle/Social Media via Reuters)

Van strikes pedestrians outside of London mosque

An armed police officer mans a cordon on the Seven Sisters Road at Finsbury Park where a vehicle struck pedestrians in London Monday, June 19, 2017. Police say a vehicle struck pedestrians on a road in north London, leaving several casualties and one person has been arrested. (Yui Mok/PA via AP)

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