Israel has announced it is halting all goods and supplies into Gaza, hours after claiming to accept a US proposal to extend the first phase of the ceasefire.
The Israeli prime minister's office warned of "additional consequences" if Hamas did not accept what Israel describes as a US proposal for extending the truce, which expired on Saturday.
US Middle East envoy Steve Witkoff had proposed a ceasefire extension covering both Ramadan and Passover. The Muslim holy month began on Friday and typically lasts 29 to 30 days, while the Jewish holiday ends on 20 April.
"Witkoff proposed the outline for extending the ceasefire after he was impressed that at this stage there was no possibility of bridging the positions of the parties to end the war, and that additional time was needed for talks on a permanent ceasefire," the Israeli statement said.
Under the proposal, half the hostages and bodies of the dead would be released on the first day of the extension. If a permanent ceasefire agreement was reached by the end, remaining hostages and bodies would also be released.
However, Israel reserved the right to resume fighting "after the 42nd day if it feels that the negotiations are ineffective," noting this position was supported by the Trump administration.
Hamas earlier rejected Israel's "formulation" of extending the first phase, though did not explicitly mention Witkoff's plan. Two Palestinian officials told Reuters that Hamas insisted on moving to phase two of the original agreement as previously agreed.
The first phase of the ceasefire had paused 15 months of fighting and secured the release of 33 Israeli hostages and five Thai nationals in exchange for around 2,000 Palestinian prisoners and detainees.
An Egyptian official involved in the talks said Hamas, Qatar and Egypt wanted to continue with the existing ceasefire deal, rejecting Israel's proposal for a four-week extension without officially entering the second phase.
Meanwhile, the UN has warned it could take decades to rebuild Gaza as talks on the enclave's long-term future have yet to materialise.
