Gaza ground offensive underway, says Israel

Gaza was largely cut off from the outside world on Saturday as Israel rained more bombs from the air and suggested its long-promised ground offensive against Hamas militants controlling the Palestinian enclave was underway.

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Israel said troops sent in on Friday night were still in the field whereas previously it had made only brief sorties during three weeks of bombing to destroy Hamas whom it said killed 1,400 Israelis, mostly civilians, on October 7.

"We attacked above the ground and under ground, we attacked terror operatives of all ranks, everywhere," defence minister Yoav Gallant said in a video statement. "The operation will continue until a new order."

Israel's military renewed a call for civilians to move south from the north where it says Hamas is hiding under civilian buildings. Palestinians say nowhere is safe.

Gaza has been under an almost complete communications blackout since Friday evening, which the Palestinian Red Crescent blamed on Israel.

Military spokesperson Daniel Hagari said Israel would allow trucks with food, water and medicine to enter Gaza, indicating that bombing might pause, at least in the area of its border with Egypt where some aid has trickled in.

Aid agencies say a humanitarian catastrophe is unfolding for Gaza's 2.3 million people who are under a total Israeli blockade.

Health authorities said 7,650 Palestinians, also mostly civilians, have been killed since Israel's bombardment began.

The head of the World Health Organisation (WHO), Tedros Adhanom Ghebreyesus, said the blackout was blocking ambulances and evacuations of patients and denying people safe shelter.