In a statement signed by 111 organizations, including Mercy Corps and Refugees International, the groups warned that mass starvation was spreading.

More than 1,000 Palestinians have been killed by Israeli forces since May while trying to get food in Gaza, mostly near food sites run by an American contractor, the U.N. human rights office said.

When Israel launched its controversial US-backed aid plan for Gaza, it aimed to stop Hamas’s alleged profiteering from the seizure and sale of humanitarian supplies.