At least 28 people were killed in an Israeli attack on a former school building in the Gaza Strip on Thursday, Palestinian medical officials said.
The attack on the central city of Deir al-Balah also wounded dozens of people, the Hamas-controlled health ministry said in the closed-off coastal area.
The building was used to house Gaza residents internally displaced by the years-long war between Israel and Hamas militants.
The Israeli military said it had attacked a Hamas command center located in the building and that measures had been taken to reduce the risk to civilians.
The information provided by both parties could not be independently verified.
The Gaza war was sparked by the unprecedented terrorist attack on southern Israel by Hamas and its allies just over a year ago. Militia members and other gunmen killed more than 1,200 people and abducted another 250 or so to the Gaza Strip.
Since then, Israel has been waging a war in an attempt to destroy Hamas, both as a military formation and as a political organization.
The number of Palestinians killed since the war began has risen to more than 42,000, according to health authorities in Gaza.
