An Israeli attack on a school used to shelter displaced Palestinians has killed at least 22 people, including 15 children, in central Gaza, officials say. Gaza's Hamas-run Civil Defence Agency said the site in Nuseirat camp was struck by a volley of artillery on Sunday, killing entire families and wounding dozens more.

At least 20 people were killed in an Israeli airstrike on a United Nations Relief and Works Agency for Palestine Refugees in the Near East school-turned-shelter in central Gaza, the Hamas-run Health Ministry in Gaza said. The school was being used to shelter displaced people in Nuseirat camp, health authorities said. It was bombed on Sunday.

Nineteen people were killed in Gaza overnight, and 10 more died on Saturday evening after Israel struck two houses in Jabalia and the Nuseirat camp in central Gaza. The death toll could rise as many of the wounded are in critical condition, medics said.