In pictures: UN school hit by Israeli tank shells

A father and son share the same hospital bed in the emergency ward at the Kamal Adwan hospital in Beit Lahiya in northern Gaza July 24,2014 . Heidi Levine for The National

Relatives of those killed and injured said the school was struck at least three times as they were waiting for buses to shuttle them to another centre. Heidi Levine for The National

A crater is seen in the courtyard of the UN school in Beit Hanoun, Gaza on July 24,2014. Heidi Levine for The National

The Palestinian death toll from a 17-day operation that Israel says is to halt rocket fire by Gaza militants yesterday passed 770, with more than 4,000 wounded. Heidi Levine for The National

An Israeli attack on a UN school in northern Gaza killed at least 15 people and injured more than 200. The school was a shelter for displaced Palestinians.