Scores of aid groups say starvation is fast spreading in Gaza, and Israel suspended some military operations to allow the movement of relief convoys.

"The humanitarian catastrophe that we are witnessing in Gaza must end now," a joint statement from the three countries reads.

UNITED NATIONS (Reuters) -United Nations aid chief Tom Fletcher has demanded that Israel provide evidence for its accusations that staff with the U.N. Office for the Coordination of Humanitarian Affairs were affiliated with Palestinian militants Hamas, according to a letter seen by Reuters on Friday.