Reuters could not independently verify the reports in northern and southern Gaza. The U.S.-backed Gaza Humanitarian Foundation launched its first distribution sites last week in an effort to alleviate widespread hunger amongst Gaza’s war-battered population, most of whom have had to abandon their homes to flee fighting.

The Foundation’s aid plan, which bypasses traditional aid groups, has come under fierce criticism from the United Nations and established charities which say it does not follow humanitarian principles. The private group, which is endorsed by Israel, said it distributed 21 truckloads of food early on Tuesday and that the aid operation was “conducted safely and without incident within the site”. However, there have been reports of repeated killings near Rafah as crowds gather to get desperately needed supplies. On Sunday, Palestinian and international officials reported that at least 31 people were killed and dozens more injured. On Monday, three more Palestinians were reportedly killed by Israeli fire.

The Israeli military has denied targeting civilians gathering for aid and called reports of deaths during Sunday’s distribution “fabrications” by Hamas. On Tuesday, it said IDF forces had identified “a number of suspects” moving towards them while deviating from the access routes. “The forces fired evasive shots, and after they did not move away, additional shots were fired near the individual suspects who were advancing towards the forces,” it said.