An Israeli strike on a crowded tent camp housing Palestinians displaced by the war in Gaza killed at least 40 people and wounded 60 others early Tuesday, Palestinian officials said. Israel said it targeted “significant” Hamas militants and disputed the death toll.

It was among the deadliest strikes yet in Muwasi, a sprawl of crowded tent camps along the Gaza coast that Israel designated as a humanitarian zone for hundreds of thousands of civilians to seek shelter from the Israel-Hamas war. Gaza’s Civil Defense said its first responders recovered 40 bodies from the strike and were still looking for people. It said entire families were killed in their tents.