The group, which has been harshly criticized by the U.N. and other aid providers, said at least five people had died in an attack on one of its buses.

The Gaza Humanitarian Foundation, the United States and Israel-backed organisation established to supplant the aid work of the United Nations, has accused Hamas of killing five staff and wounding multiple others in an attack on a bus en route to a food distribution centre.

An organization backed by Israel and the United States began distributing food packages in Gaza at the end of May, overseeing a new model of aid distribution which the United Nations rejects as inadequate,