DEIR AL-BALAH, Gaza Strip (AP) — The United Nations said Monday it will “reduce its footprint” in the Gaza Strip after an Israeli tank strike hit one of its compounds last week, killing one staffer and wounding five others.

The world body will temporarily remove about a third of its approximately 100 international staffers working in Gaza, U.N. Secretary-General spokesman Stéphane Dujarric. He pointed to the increased danger after Israel relaunched its military campaign last week with bombardment that has since killed hundreds of Palestinians. Israel has also cut off all food, medicine, aid and other supplies to Gaza’s population for the past three weeks.

Dujarric’s statement was the U.N’s first to point the finger at Israel in the March 19 explosion at the U.N. guesthouse in central Gaza. He said that “based on the information currently available,” the strikes on the site “were caused by an Israeli tank.”

The Israeli military did not immediately comment. Israel has denied it was behind the explosion, which came a day after it shattered Gaza’s 2-month-old ceasefire with a surprise bombardment around the Gaza Strip.

Dujarric said the U.N. “has made taken the difficult decision to reduce the Organization’s footprint in Gaza, even as humanitarian needs soar.” He said the U.N. “is not leaving Gaza,” pointing out that it still has about 13,000 national staff in Gaza, mainly working for UNRWA, the U.N. agency for Palestinian refugees.

New strikes killed dozens in Gaza

New Israeli strikes over the past 24 hours killed more than 60 Palestinians around Gaza, the territory’s Health Ministry said. The ministry’s count does not distinguish between civilians and combatants.

The ministry on Monday put out a list of the names of more than 15,000 children, 17 and under, killed by Israel’s campaign since it began more than 17 months ago. The list included nearly 5,000 children under the age of 6 who had been killed, including 876 infants who had not reached a year in age,

Israel, which launched its campaign in retaliation for Hamas’ October 2023 attack, says it has restarted its bombardment and cut off food to Gaza to force Hamas to accept new terms for the ceasefire and release more hostages. It says it targets Hamas members and positions, blaming the group for civilian deaths because it operates among the population.

Hamas has been designated as a terrorist organization by the United States, Canada and the European Union.

Air raid sirens sound in Israel after a missile attacks from Yemen and Gaza

Air raid sirens and explosions were heard over Jerusalem on Monday evening after the Israeli military said it intercepted a missile launched from Yemen.

Yemen’s Houthi rebels have fired a handful of long-range missiles at Israel in the days since Israeli forces resumed the war in Gaza. There was no immediate claim of responsibility from the Houthis.

Two rockets were intercepted after crossing into Israeli territory bordering the Gaza Strip, setting off air raid sirens earlier Monday evening, the Israeli military said. There were no immediate reports of casualties.

Al-Quds Brigades, the military arm of the Palestinian Islamic Jihad militant group, claimed responsibility

Medical workers are under fire in Gaza

The U.N. reduction comes as aid workers and medical staff have come under fire.

The International Committee of the Red Cross said its office in the southern city of Rafah in the Gaza Strip was damaged by an explosive projectile Monday. It said no staff were hurt but the damage has a direct impact on its ability to operate. It did not specify who was behind the explosion.

ICRC also said that on Sunday, contact was lost with emergency medical technicians from the Palestine Red Crescent Society and their whereabouts remain unknown. Last week, humanitarian workers in Gaza were killed and injured, it said.

On Sunday, Israel struck the surgery ward at southern Gaza’s biggest hospital, killing two people and wounding others, many of whom were already injured by earlier strikes. One of those killed at Khan Younis’ Nasser Hospital was a teenage boy recovering from surgery.

The other was a Hamas official that Israel says was the target of the strike, Ismail Barhoum. Hamas said Barhoum was undergoing treatment at the time. The Israeli military denied that, saying he oversaw Hamas’ finances in Gaza, including transferring money to its armed wing, and was working out of the hospital.

The strike last week on the U.N. compound outside Deir al-Balah killed a Bulgarian staffer, Marin Valev Marinov, 51. He worked with the U.N. Office for Project Services, which carries out infrastructure and development projects around the world.

In the two days before the deadly blast, strikes hit next to and then directly in the compound, UNOPS chief Jorge Moreira da Silva said earlier. He said the agency had contacted the Israeli military after the first strike and confirmed that the military was aware of the facility’s location.

Full impact of the U.N. reduction is not immediately known

Olga Cherevko, spokesperson for the U.N.’s humanitarian office, known as OCHA, said the U.N. and its partners have already suspended a number of activities, many in education, protection and water and sanitation services. The reason, she was, was safety concerns and the impact of Israeli evacuation orders.

“A lot things are constrained right now because of the security situation,” she told AP before Dujarric’s announcement. “The challenges are massive. We have had a lot of our activities affected by the situation and a lot of our partners have had to suspend operations because it is just not safe.”

Movement of trucks, including those distributing water, have been affected, she said. Only 29 out of 237 temporary learning spaces have resumed their activities since the ceasefire collapse, she said.

Israel’s campaign in Gaza has killed more than 50,000 Palestinians and wounded more than 113,000, according to the Health Ministry. Nearly 90% of the population of some 2,3 million have been driven from their homes. Israel launched the campaign vowing to destroy Hamas after its Oct. 7, 2023 attack on southern Israel, in which combatants killed some 1,200 people and kidnapped 250 others.

Lederer reported from the United Nations, Keath from Cairo. Associated Press correspondent Sarah El Deeb in Beirut contributed to this report.