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.

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, which took hold in January after over a year of negotiations. Both sides stopped short of saying the ceasefire had ended.

Israel will stop the entry of all humanitarian aid into Gaza to pressure Palestinian militant group Hamas into accepting a temporary extension of the ceasefire agreement, officials said on Sunday, a day after the initial phase of the truce expired.