Israel-Gaza updates: Gantz rejects Netanyahu's request, resigns

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

Israel rescued four hostages alive from two locations in the heart of Nuseirat, Gaza, Israel said Saturday.

Noa Argamani, 25; Almog Meir Jan, 21; Andrey Kozlov, 27; and Shlomi Ziv, 40, were kidnapped by Hamas from the 'Nova' music festival on Oct. 7, according to the Israel Defense Forces.

The rescues come after a morning of strikes in Central Gaza. Videos show dozens of people in the emergency department at Al Aqsa Martyrs hospital, the region's only functioning hospital.

Hamas called it an "unprecedented brutal attack" and said there are "dozens of martyrs and wounded in the streets" although they do not yet know how many people were killed and injured in the attack.

The rescued hostages have been transferred to the 'Sheba' Tel-HaShomer Medical Center and are in good condition, the IDF said.

-ABC News’ Victoria Beaule

Three Palestinians were killed and 15 others were injured when Israeli forces struck an UNRWA school and shelter in Al-Shati refugee camp in northern Gaza Friday, according to statements from Hamas and the Israel Defense Forces.

Israeli forces said Hamas "terrorists" were operating "from a container inside the grounds" of the school in Al-Shati.

"By targeting this school, which is affiliated with UNRWA, the number of UNRWA schools designated as shelter centers and targeted by the occupation by bombing exceeds more than 150 schools affiliated with UNRWA, in addition to the bombing of dozens of other facilities, installations, and service centers affiliated with UNRWA, which were designated for sheltering displaced people," Hamas said in a statement.

-ABC News' Sami Zayara, Diaa Ostaz and Jordana Miller