Israeli fire killed at least 40 people, half of them near an aid distribution site operated by the U.S.-backed Gaza Humanitarian Foundation on Monday, the territory's health ministry said, as U.N. officials denounced Israeli-backed aid delivery methods.

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.

The new group backed by Israel and the US for aid distribution in Gaza says Hamas attacked a bus transporting some of its Palestinian workers, killing at least five people.The Gaza Humanitarian Foundation (GHF) said the attack happened on Wednesday night as the bus carrying more than two-dozen workers travelled to a distribution centre in southern Gaza,