Egyptian security sources said they had received the names of 14 Israeli women and children from Hamas and were waiting for more details on when the hostages would be handed over to Egyptian authorities.
Israeli security officials were reviewing the list, though the office of Prime Minister Benjamin Netanyahu did not confirm the number or timing of the expected release.
Earlier, Israeli prison authorities said they were preparing to release 42 Palestinian detainees, in line with the terms of the Qatari brokered accord agreed last week.
Under the truce — the first break in the seven-week war — 50 women and children held by Hamas are to be released in stages over four days in return for 150 Palestinian women and children who are among thousands of detainees in Israeli jails.
Hamas fighters freed 24 hostages on Friday - 13 Israelis, 10 Thai farm workers and a Filipino, and 24 Palestinian women and 15 teenagers were later released from Israeli detention.
The former hostages underwent medical checks before reuniting with relatives in Israel, where happiness mingled with concern for those still held by militants in Gaza.
"I am happy I received my family back, it's allowed to feel joy and it's allowed to shed a tear. That's a human thing," said Yoni Katz Asher, whose wife Doron and children Raz and Aviv were freed on Friday. "But I am not celebrating, I will not celebrate until the last of the hostages returns home."
In Palestinian homes, the joy of being reunited with loved ones was tinged with bitterness, as witnesses claimed in at least three cases, prior to the prisoners' release, Israeli police raided their homes in Jerusalem.
Among them was Sawsan Bkeer, a mother awaiting the return of her 24-year old daughter who had been jailed since 2015 on knife and assault charges.
"There is no real joy, even this little joy we feel as we wait," said Bkeer, adding "we are still afraid to feel happy."
Israeli police declined to comment.
Aid trucks
Both sides have said hostilities would resume as soon as the truce ends, though U.S. President Joe Biden said there was a real chance of extending the truce.
Biden said the pause was a critical opportunity to get humanitarian aid into Gaza and declined to speculate on how long the Israel-Hamas war would last. Asked at a press conference what his expectations were, he said Israel's goal of eliminating Hamas was legitimate but difficult.
Israel has vowed to destroy Hamas after its fighters killed 1,200 people and took about 240 hostages after they broke through security barriers around the Gaza Strip and rampaged through Israeli communities around the blockaded enclave, on October 7th.
Since then, Israel has rained bombs on Gaza, killing more than 14,000 people, roughly 40% of them children, Palestinian health authorities said.
Hundreds of thousands of Gaza's 2.3 million people have fled their homes, including most of those in its northern half.
With the truce now silencing the guns, more aid has begun to trickle in.
Four tankers of fuel and another four containing cooking gas entered the southern Gaza Strip via the Rafah Crossing early on Saturday, Israeli authorities said, stressing they were meant for essential humanitarian infrastructure in the Gaza Strip, such as hospitals.
The Palestine Red Crescent Society said 196 trucks of humanitarian aid carried food, water and medical supplies through the Rafah Crossing on Friday, the biggest such convoy into Gaza since the beginning of Israeli-Hamas war.
Aid groups have used the truce to evacuate patients and health workers from some northern hospitals that have all but collapsed due to attacks and lack of fuel.
The World Health Organization helped transfer 22 patients from Al Ahli hospital to the south on Friday, its chief Tedros Adhanom Ghebreyesus said on social media platform X.
"To meet all the health needs in Gaza, much more support is needed and above all sustained ceasefire," he said.
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