The Israeli military says it has partially withdrawn troops from parts of Gaza after a ceasefire agreement between Israel and Hamas came into effect on Friday morning.
Israeli forces said they had pulled back to an agreed position within the territory - though troops still occupy half of the Strip.
Footage shows thousands of Palestinians making their way to the north of Gaza, which has been heavily bombarded by Israeli forces in recent months.
The ceasefire came into effect after the Israeli government approved the first phase of US President Donald Trump's ceasefire and hostage return deal on Thursday. The next phases are still being negotiated.
Under the deal, Hamas has until 12:00 local time (10:00 BST) on Monday to release all Israeli hostages - including 20 who are believed to be alive, and up to 28 hostages' remains.
Israel should also release about 250 Palestinian prisoners serving life sentences in Israeli jails. Israeli army radio said 100 would be released into the West Bank and five to East Jerusalem. More are expected to be deported.
A further 1,700 Palestinians from Gaza who have been detained should also be released.
Under the terms of the deal, aid lorries should also be allowed unrestricted into the Strip to bring desperately needed aid to Gaza's population - many of whom have been repeatedly displaced during the two-year war.
Some 600 aid lorries are expected to enter Gaza daily from Friday, though details of the rollout remain unclear and it has not yet been confirmed whether any increased aid has reached people since the ceasefire began.
A famine was declared in part of the territory for the first time in August by UN-backed experts, who said more than 500,000 people were facing "catastrophic" conditions characterised by "starvation, destitution and death".
Israel has repeatedly denied that there is starvation in the territory.
In related development, up to 200 US troops already based in the Middle East will be moved to Israel to help monitor the ceasefire in Gaza, according to US officials.
The US military will establish a multinational taskforce in Israel, known as a civil-military coordination centre, which is likely to include troops from Egypt, Qatar, Turkey and the UAE, they said.
One senior official said no US forces will enter Gaza, adding that the American role was to create a Joint Control Center which will "integrate" the multinational force going in.
The Israeli government has approved the first phase of a Gaza deal with Hamas, which has led to a ceasefire and the release of hostages and prisoners.
The taskforce will be led by US Central Command (Centcom) based in the region, and is intended to oversee the progress of the ceasefire agreement and also help coordinate humanitarian assistance.
The multinational force will inform both the Israelis and Hamas via Egypt and Qatar of the situation on the ground and any potential violations of the truce, one of the officials said.
The force is being established under the leadership of Adm Brad Cooper, head of Centcom. He joined the American delegation for part of indirect talks in Egypt earlier this week, one of the officials said.
Those talks led to US President Donald Trump announcing on Thursday that Israel and Hamas had "signed off on the first phase" of a peace plan he unveiled last week.
One of the point's in Trump's 20-point Gaza plan included the US working with Arab and international partners to develop a temporary International Stabilisation Force to immediately deploy in Gaza but this is yet to be agreed between the sides and would only happen if a hostage and prisoner exchange is completed.
Israel launched the war in Gaza in response to the Hamas attacks on Israel on 7 October 2023, in which about 1,200 people were killed and 251 were taken hostage.
Since then, Israel's massive military offensive has killed more than 67,000 Palestinians in Gaza, according to the territory's Hamas-run health ministry, including more than 18,000 children. These figures are seen as reliable by the UN and other international bodies.
