When Israeli warplanes swooped over the Gaza Strip following Hamas militants' deadly attack on southern Israel, Palestinians say a different kind of war took hold in the occupied West Bank.

Overnight, the territory was closed off. Towns were raided, curfews imposed, teenagers arrested, detainees beaten, and villages stormed by Jewish vigilantes.

Heavy fighting erupted Monday around a hospital in northern Gaza where thousands of patients and displaced people have been sheltering for weeks, as Israeli forces focus on clearing out medical facilities that they say Hamas militants use for cover.

The advance on the Indonesian Hospital came a day after the World Health Organization evacuated 31 premature babies from Shifa Hospital in Gaza City, the territory's largest, where they were among more than 250 critically ill or wounded patients stranded there days after Israeli forces entered the compound.

Israeli troops were "expanding" their operation in the Gaza Strip Monday, as Qatari mediators said they were inching closer to a deal to free some of the 240 hostages held by Hamas militants.

Israel has warned residents of Gaza's largest refugee camp Jabalia and a nearby coastal camp to evacuate, as the military said Sunday it was "expanding its operational activities in additional neighbourhoods... of the Gaza Strip."

Yemen's Houthi rebels seized an Israeli-linked cargo ship in a crucial Red Sea shipping route Sunday and took its 25 crew members hostage, officials said, raising fears that regional tensions heightened over the Israel-Hamas war were playing out on a new maritime front.

The Iran-backed Houthi rebels said they hijacked the ship over its connection to Israel and would continue to target ships in international waters that were linked to or owned by Israelis until the end of Israel's campaign against Gaza's Hamas rulers.

The United States said it is still working to secure a deal between Israel and Hamas after a reported tentative agreement to free women and children held hostage in Gaza in exchange for a pause in fighting.

"We have not reached a deal yet, but we continue to work hard to get to a deal," White House National Security Council spokeswoman Adrienne Watson said on X, formerly Twitter, in response to the Washington Post reporting a deal had been agreed.

A United Nations team said Sunday that 291 patients were left at Gaza's largest hospital after Israeli troops had others evacuate. Those left included 32 babies in extremely critical condition, trauma patients with severely infected wounds, and others with spinal injuries who are unable to move.

The team was able to tour Shifa Hospital for an hour after about 2,500 displaced people, mobile patients and medical staff left the sprawling compound Saturday morning, said the World Health Organization, which led the mission. It said 25 medical staff remained, along with the patients.

Thousands of family members and supporters of some 240 hostages held in Gaza streamed into Jerusalem on Saturday, castigating Israeli Prime Minister Benjamin Netanyahu's government over his management of the war with Hamas and pleading with the government to do whatever it takes to bring their loved ones home.

As public pressure mounted, Netanyahu said Saturday that Israel's War Cabinet would meet with representatives of the families this week. "I am marching with you. The Israeli people are marching with you," he said. "I promise, when we have something to say, we will inform you."

U.S. President Joe Biden says that achieving a cease-fire amid Israel's war with Hamas "is not peace" and that an important key to lasting stability is a reunited Gaza Strip and West Bank that can be governed under "a revitalized Palestinian Authority."

U.S. President Joe Biden has pressed for the immediate release of hostages seized by Hamas in Israel during talks with the leader of Qatar, which has relations with the Palestinian movement.

Biden, in San Francisco for an Asia-Pacific summit, in a telephone call with Emir Sheikh Tamim bin Hamad Al-Thani "discussed the urgent need for all hostages held by Hamas to be released without further delay," a White House statement said.

A first consignment of fuel has entered Gaza after U.S. pressure on Israel, allowing communications to resume in the territory, where a hospital director on Saturday said 26 people had been killed in a strike in Khan Yunis.

A two-day blackout caused by fuel shortages ended after a first delivery arrived from Egypt late Friday, but U.N. officials continued to plead for a ceasefire, warning no part of Gaza is safe.