The Gaza Humanitarian Foundation said the attack, which the BBC could not independently verify, came after days of threats from Hamas.

The U.S.-backed Gaza Humanitarian Foundation (GHF) stated late on Wednesday that Hamas “brutally attacked” a bus of Palestinians working for the aid organization while en route to one of their distribution sites.

Multiple aid workers were killed after a bus was attacked in Gaza on Wednesday night, according to a US-backed humanitarian aid organization which accused Hamas of carrying out the assault.