At least 17 Palestinians were killed, including children, in an Israeli strike on a school in Gaza's Nuseirat camp on Thursday, Nuseirat's Al-Awda hospital said.
Another 42 people were wounded in the strike, according to the hospital, which received the casualties.
There was no immediate comment from the Israeli military.
Israel has carried out several strikes on schools-turned-shelters in recent months, saying it precisely targets Hamas militants hiding out among civilians. The strikes often kill women and children.
More than 42,847 Palestinians have been killed and 100,544 injured in Israel's military offensive on Gaza since Oct. 7, 2023, the Gaza health ministry said on Thursday.
The war has displaced around 90% of Gaza's population of 2.3 million, often multiple times. Hundreds of thousands of people are crammed into tent camps along the coast after entire neighborhoods in many areas were pounded to rubble.