Israeli airstrikes hit about 40 targets across the Gaza Strip over the past day, the military said on Friday, hours after Hamas rejected an Israeli ceasefire offer that it said fell short of its demand to agree a full end to the war.

Israel was keeping up its intense bombing campaign in the enclave, which has exacted a heavy price on civilians struggling to find safe places to shelter.

Hamas is “studying” an Israeli proposal for a ceasefire in Gaza that would see 10 hostages released in exchange for hundreds of Palestinian prisoners and detainees, an official with the militant group told CNN.