UNRWA, the main U.N. agency aiding Palestinians, said its drivers were forced to unload supplies at gunpoint, in what it called one of the worst such incidents of the war.

GENEVA/CAIRO (Reuters) -Nearly 100 trucks carrying food for Palestinians were violently looted on Nov. 16 after entering Gaza, in one of the worst aid losses during 13 months of war in the enclave where hunger is deepening, two U.N. agencies told Reuters on Monday. The convoy transporting food provided by U.N. agencies UNRWA and the World Food Programme was instructed by Israel to depart at short notice via an unfamiliar route from Kerem Shalom border crossing, said Louise Wateridge, UNRWA Senior Emergency Officer.

The U.N. agency said the incident highlighted the “challenges of bringing aid into southern and central Gaza.”