President Joe Biden and French President Emmanuel Macron welcomed the rescue of the hostages at a press briefing Saturday.

Biden welcomed the safe return of four hostages from Gaza, pledging that the United States will not stop working until all hostages are home.

"I want to echo President Macron’s comments welcoming the safe rescue of four hostages that were returned to their families in Israel. We won't stop working until all the hostages come home and a ceasefire is reached. That is essential to happen,” Biden said.

President Macron spoke before President Biden, also celebrating the news.

“In Gaza, we want to attain the immediate liberation of hostages and we can only welcome the liberation of four hostages by the Israeli army. We want to achieve the immediate ceasefire and open up the prospect of a political solution which is the only one that can bring about a fair and lasting peace and meet the security of concerns of both people,” Macron said.

“And that is why we are supporting the comprehensive proposal of the United States of America,” he added, calling on Israel to do more to assist humanitarian aid to Rafah, calling the situation “unacceptable.”

-ABC News’ Molly Nagle and Michelle Stoddart

At least 150 Palestinians were killed in Israeli bombing targeting Nuseirat, in central Gaza, Saturday, according the Ministry of Health.

One video verified by ABC News shows about a dozen bodies lying on the street, covered in blood and surrounded by rubble.

Others show people fleeing Nuseirat market as smoke fills the background, and people arriving at the hospital in droves, carrying wounded people and children.

Al Aqsa Martyrs Hospital says it received 55 bodies Saturday amid the Israeli raid on central Gaza, calling on people to come to donate blood, according to a spokesperson.

The hospital is overcrowded and cannot accommodate any more injured people, it said.

“We call on the international community and UN organizations to intervene to stop this brutal aggression,” the hospital said in a statement.

-ABC News’s Victoria Beaule

At least 47 Palestinians have been killed and dozens others were wounded in Central Gaza Saturday amid ongoing Israeli raids in Nuseirat, according to the Hamas-run Gaza Health Ministry.

A number of victims are still under the rubble and on the roads, with ambulance and civil defense crews unable to reach them.

"The occupation forces penetrating into the Central Governorate are committing a massacre against citizens in the Nuseirat camp, as a result of which many martyrs and wounded were transported to Al-Aqsa Martyrs Hospital," the Health Ministry said.

At least 36,801 Palestinians have been killed and 83,680 have been wounded since Oct. 7, according to the Gaza Health Ministry.

Videos obtained by ABC News from the hospital show dozens of people being brought in and lining the floors of the Al Aqsa Martyrs Hospital.

-ABC News' Samy Zyara and Nasser Atta

At least 40 people were killed -- 14 of whom were children -- and at least 74 others were injured in the Israeli strike on an UNRWA school at the Nuseirat Refugee Camp, the Gaza Ministry of Health said Thursday.

Israeli officials have claimed that the strike was targeting Hamas and Islamic Jihad terrorists "hiding inside the school," IDF spokesman Daniel Hagari said during a press briefing Thursday.

The U.S. State Department said Israelis have claimed they were targeting "only one part of the building without hitting areas where civilians were sheltering," spokesperson Matt Miller said Thursday.

"At the same time, we've seen the reports on the ground. We’ve seen the videos on the ground. We've seen the claims that 14 children were killed in the strike and certainly if ... it is accurate that 14 children were killed, those aren’t terrorists. And so the government of Israel has said that they're going to release more information about this strike, including the names of those who died in it," Miller said. "We expect them to be fully transparent in making that information public."

U.N. Secretary-General Antonio Guterres condemned the strike on the school, which the U.N. said was sheltering some 6,000 internally displaced persons, in a statement.

A spokesperson for Guterres said, "He underscores that UN premises are inviolable, including during armed conflict and must be protected by all parties at all times. The Secretary-General calls on all parties to respect and protect civilians, and ensure their essential needs are met, in accordance with international humanitarian law."

-ABC News' Sami Zayara, Jordana Miller and Shannon Crawford