Israel strike on UN school that left dozens dead used US munitions, CNN analysis finds

By Allegra Goodwin, Abeer Salman, Mohammad Al Sawalhi, and Rob Picheta, CNN

Jerusalem (CNN) — Dozens of people were killed by an overnight Israeli airstrike on a United Nations-run school in central Gaza, authorities said, in an attack that CNN analysis found was conducted with a US-made weapon.

The school, run by the UN agency for Palestinian refugees (UNRWA), was housing displaced people in the Nuseirat refugee camp at the time of the incident, the Gaza government media office said.

At least 40 people were killed in the strike, according to medical workers at the nearby Al-Aqsa Martyrs Hospital. Authorities at the hospital said casualties could rise as victims were still being brought to the hospital on Thursday morning.

The Israeli military confirmed it carried out the airstrike, which it said targeted a Hamas compound operating inside the school. Israeli military spokesperson Lt. Col. Peter Lerner later told journalists the military was not “aware of any civilian casualties.”

Lerner said “20 to 30 Hamas and Islamic Jihad” militants were targeted in the strike, and that those targeted were “using the facilities to plan and execute attacks” against Israeli forces. Militants who were involved in the October 7 attacks on Israel were among those killed, Lerner said.

Later on Thursday, the Israeli military said it had so far identified nine alleged Hamas and Islamic Jihad fighters targeted in the strike.

CNN cannot independently verify any of those claims or the identities of the nine people the IDF said it identified.

A CNN analysis of video from the scene and a review by an explosive weapons expert found that US-made munitions were used in the strike on the school. CNN identified fragments of at least two US-made GBU-39 small diameter bombs (SDB) in video filmed at the scene by a journalist working for CNN.

“You can determine that GBU-39s were used in Nuseirat because just as seen at the Rafah strike, you have the tail actuator section with the distinct bolt and fin slot,” Trevor Ball, a former US Army explosive ordnance disposal technician told CNN Thursday.

It marks the second time in two weeks that CNN has been able to verify the use of US-manufactured munitions in deadly Israeli attacks on displaced Palestinians, the first being a deadly IDF strike on a displacement camp in Rafah on May 26.

Asked whether American weapons were used in the strike, US State Department Spokesperson Matthew Miller said Thursday that was a question for the Israeli government.

Miller said the US has been in contact with Israel over the strike and that Israel has only told the US “essentially what they have said publicly.” He added that the Israeli government would release more information, which the US expects to be “fully transparent.”

Thursday’s attack came after the IDF ramped up ground and air assaults in the center of the strip on Tuesday amid a deepening humanitarian crisis there. Palestinians in central Gaza have reported that the intensity and frequency of Israeli strikes in the last week have felt like the beginning of the war.

According to a journalist in the area working with CNN, the school was hit by at least three missiles that penetrated the three-story building. The facility was believed to be housing thousands of displaced people who had taken shelter in the school, its yard, and the surrounding area, according to the journalist. UNRWA Commissioner-General Philippe Lazzarini said the school was sheltering about 6,000 displaced people.

“We were asleep here, (and) we suddenly saw rockets falling. I went down holding my child, we were both injured, my relative was martyred in that room,” journalist Jaber Abu Daher told CNN on Thursday.

He said Israeli Prime Minister Benjamin Netanyahu “is killing the civilians, he is not killing militants, it’s innocent people asleep in a UNRWA facility… what did children and elderly do? What did they do to him? He is looking for Hamas people? Go look for them, why are you killing us in schools?”

The Israeli military defended the bombing of the school, saying it had so far identified nine alleged militants it had targeted in the pre-dawn strike, its spokesperson Daniel Hagari said Thursday. He said the IDF believes there were “about 30” militants hiding inside the UN school but did not provide further evidence or information as to how the IDF has come to this conclusion.

Hagari added that Israeli forces, using aerial surveillance over several days, had delayed the strike on the school twice because they had identified civilians in the area.

“We conducted the strike once our intelligence and surveillance indicated there were no women or children inside the Hamas compound inside those classrooms,” Hagari said. He also accused Hamas of violating international law by allegedly using the UN school as an operational base.

The US State Department said Israel’s strike did not cross US President Joe Biden’s so-called “red line” because that line referred to a “large-scale operation in Rafah,” which the US has not yet seen.

“That said, we have seen strikes that put civilians in danger well before the president said that, and we have made clear to the government of Israel that we expect them to do everything that they can to minimize civilian harm,” Miller said.

The UN Secretary-General Antonio Guterres condemned the strike, saying “UN premises are inviolable, including during armed conflict and must be protected by all parties at all times,” according to his spokesperson Stéphane Dujarric.

US-made weapon used

Gaza authorities said the dead and injured continue to be brought to Al-Aqsa Martyrs Hospital, which is operating at three times its clinical capacity, “signaling a real disaster that will lead to a greater increase in the number of martyrs,” the Gaza media office said.

UNRWA said its school was “possibly hit several times” overnight by the strikes. An UNRWA spokesperson told CNN it was not able to confirm Israeli reports that Hamas operatives had been using the school as a compound.

“We remind all parties to the conflict that schools and other UN premises must never be used for military or fighting purposes,” the spokesperson said. “UN facilities must be protected at all times.”

Lazzarini said in a post on X that while “claims that armed groups may have been inside the shelter are shocking” they have been unable to verify it. “Attacking, targeting or using UN buildings for military purposes are a blatant disregard of International Humanitarian law,” he added.

Munitions made in the US were also used in the deadly Israeli strike on a displacement camp in Rafah late last month, a CNN analysis of video from the scene and a review by explosive weapons experts found.

After that attack, US President Joe Biden refused calls to alter his policy towards Israel, suggesting the deadly Rafah strike had not yet crossed a red line that would force changes in American support. He had previously said in a CNN interview that he wouldn’t allow certain US weapons to be used in a major offensive in Rafah.

In April, CNN reported that the Biden administration authorized the transfer to Israel of over 1,000 small-diameter bombs, according to three people familiar with the matter.

‘The situation is apocalyptic’

An Israeli strike hit the same camp last month and killed dozens of people, Al-Aqsa Martyrs hospital said at the time. One woman, Um Mohammad Taha, told CNN then that five houses had collapsed, including her sister’s, and that many were buried under the rubble, including children.

And another Israeli attack on the Nuseirat camp in April injured several journalists, including one working with CNN.

Doctors Without Borders/Médecins Sans Frontières (MSF), which has supported Al-Aqsa hospital, said Wednesday it had taken in more than 70 people who had been killed, and more than 300 injured, in just 48 hours, amid an escalation in bombing and ground fighting.

Karin Huster, an MSF nurse, said in the group’s statement: “We have seen hospitals being bombed. We have seen refugee camps being bombed. We have seen humanitarian warehouses being bombed. The situation is apocalyptic.”

“The odor of blood when I entered the emergency room was just overwhelming. People are lying on the floor. People are lying outside,” Huster added. “It’s just an emotionally overwhelming situation.”

Israel’s renewed focus on bombarding central Gaza highlights again the elusive nature of its stated ambition to destroy Hamas. The brunt of the Israeli military campaign had, in recent months, moved south towards Rafah, but rocket fire and ground warfare have now again engulfed encampments further north such as Nuseirat and areas like Bureij, both just south of Gaza City.

“Every place we went to after they said it’s safe was struck – I want the war to stop,” Mohammad Farajallah, a child who said his two brothers were killed in Thursday’s strike, told CNN as he rifled through the rubble of the school.

The latest attack also came as American, Egyptian and Qatari officials met in Doha to revive negotiations on a new ceasefire and hostage release deal.

The meetings follow a three-phase proposal — characterized as an Israeli plan — laid out by US President Joe Biden that would pair a release of hostages with a “full and complete ceasefire” in Gaza.

On Wednesday, Israel’s Minister of Defense Yoav Gallant said the country’s military offensive in Gaza would not be halted for any resumption of ceasefire and hostage release talks with Hamas.

“We are in a process of continuous engagement to wear down the enemy. Any negotiations with the terrorist organization Hamas will only be conducted under fire,” Gallant said in a recorded video statement.

This story has been updated to revise the number of fatalities in the UNRWA school strike.

This breaking news story will be updated. CNN’s Jonny Hallam, Richard Roth, Michael Conte, and Jennifer Hansler contributed to this report.

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