The head of the agency that helps oversee international aid deliveries to the territory has criticized the impact of Israeli policy on civilians.

The foreign ministers of 25 countries cited the dangers of the aid distribution system in calling for an immediate end to the war in a statement released Monday afternoon.

Pressure is mounting on Israel to lift all restrictions on food and other emergency supplies, with more than 870 Palestinians having been killed while seeking aid.

The head of a UN office in the Gaza Strip has described an aid distribution scheme run by a rival organization as a "sadistic death trap. " Philippe Lazzarini is the head of the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA),

The only conclusion that one can come to is that Israel is doing this deliberately,” says analyst Alex de Waal.

We remain committed to ensuring that shocking incidents in which people were killed while attempting to distribute or access relief supplies are fully investigated as quickly as possible, Foreign Mini

On Saturday, Israeli soldiers fired at a crush of Palestinians seeking food from Israeli-supported contractors, killing an estimated 32 people. On Sunday, 93 Palestinians were reported killed when Israeli soldiers opened fire on a melee of civilians desperate for supplies from a U.N. food convoy.

A visit to one distribution site shows how a system designed to squeeze out the U.N. and Hamas continues to draw hungry Palestinians into deadly encounters.

The group of nations has also called for a probe into Gaza Humanitarian Foundation aid distribution after the death of more than 800 Palestinians.