A 16-year-old British girl reported missing after the Hamas attack on Israel was murdered by the militant group, her family have said.
Noiya Sharabi disappeared from Be'eri kibbutz after it was raided on 7 October.
Her younger sister, 13-year-old Yahel, also vanished and was confirmed to have died earlier this week.
Their mother, Lianne Sharabi, was also killed, while their father, Eli Sharabi, is still missing.
Noiya's death was confirmed after her body was formally identified.
It brings the number of Britons killed since Hamas launched its attack to at least 10.
Among the other confirmed victims are photographer Danny Darlington and soldier Nathanel Young.
In total, some 1,400 people have died in Israel since the Hamas incursion.
'Potential' for conflict to escalate
The attack led Israel to launch strikes on Gaza, with dozens of Palestinians reported to have died overnight as a likely ground offensive approaches.
Ahead of the move, the Israeli military has said there are still 212 people being held hostage in Gaza.
US secretary of state Antony Blinken said on Sunday he is hopeful more will soon be released, but warned he sees "potential" for the conflict to escalate across the Middle East.
Prime Minister Benjamin Netanyahu has warned the group not to enter the war, vowing a response that would be "devastating" for Lebanon.
There are also concerns about the possible role of Iran, an ally of Hezbollah.
Meanwhile, the UN has said lorries carrying aid must continue to be allowed into Gaza.
A second convoy of 19 trucks reportedly entered on Sunday after 20 were allowed through the Rafah crossing from Egypt yesterday, but the UN has said at least 100 a day are needed to cover urgent food and medical needs.