TEL AVIV, Israel -- Israel faced sharp criticism as it stopped the entry of all food and other supplies into Gaza on Sunday and warned of “additional consequences” for Hamas if a fragile ceasefire isn't extended. Mediators Egypt and Qatar accused Israel of violating humanitarian law by using starvation as a weapon.

Israel said it accepted a Trump administration proposal to extend the deal but Hamas rejected it.

Israel says it is stopping the delivery of aid to Gaza until Hamas accepts a U.S. proposal for an extension of the ceasefire deal.

Hamas is set to free six more Israeli hostages from the Gaza Strip. The release scheduled for Saturday would also involve freeing hundreds of Palestinian prisoners.

Israel has halted all food, fuel, and medicine to Gaza and vowed "additional consequences" if Hamas did not embrace the new proposal.

Hamas accused Israel of trying to derail the ceasefire agreement hours after its first phase ended. It called the decision to cut off aid “cheap extortion, a war crime and a blatant attack” on the truce,

Israel said Sunday it was suspending the entry of aid into Gaza, where both Israel and Palestinian sources reported Israeli military strikes as Hamas alleged a "coup" against a six-week old truce.The health ministry in Hamas-run Gaza reported at least four killed and six wounded in Israeli attacks.