A Hamas official said on Monday the Palestinian militant group would next release hostages on Sunday, a day later than expected under a complex ceasefire accord reached this month with Israel.

Romi Gonen, Emily Damari and Doron Steinbrecher were the first three hostages released from Gaza on Sunday morning. They arrived in Israel, the military announced, hours after the ceasefire between Israel and Hamas took hold.

Follow NBC News' live coverage as Israel and Hamas agree to a ceasefire deal to halt the Gaza war and release hostages, while Biden and Trump react.

The deal brings hope for Palestinians facing food shortages and widespread death and destruction, but its terms are controversial for an Israeli public traumatized by the October 7, 2023, terrorist attack—and wary of security concessions. Israel’s cabinet still has to give the deal its blessing.

The three Israeli hostages freed by Hamas appeared to receive “gift bags” containing mementos from their time in captivity, following their release on Sunday...

The video showed the three women clambering into a Red Cross van, flanked by masked Hamas fighters armed with machine guns.

Masked Hamas fighters carrying rifles returned to the streets of Gaza after a ceasefire came into effect on Sunday, declaring “victory” as they drove through rubble-strewn streets...

President-elect Donald Trump's incoming national security adviser, Mike Waltz, said on Sunday that if Hamas reneges on the Gaza ceasefire-for-hostages deal, the United States will support Israel "in doing what it has to do.

Blinken’s remark comes after Israel has killed at least 45,000 Palestinians in Gaza, per the most conservative count.