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 United Nations says the Israeli- and United States-backed Gaza Humanitarian Foundation (GHF) is a “failure” from a humanitarian perspective. Jens Laerke, spokesperson for the UN Office for the Coordination of Humanitarian Affairs (OCHA), said aid operations have stalled because the GHF is not delivering supplies safely to those in need.