LONDON — US-made munitions were used in a deadly Israeli airstrike on a United Nations-run school in central Gaza on Thursday where Palestinians were sheltering, a CNN analysis of video from the scene and review by an explosive weapons expert has found.

At least 45 people died in strike on the school in the Nuseirat refugee camp, a spokesperson for Gaza's Ministry of Health told CNN.

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.

The Israeli military confirmed it carried out Thursday's airstrike, which it said targeted a Hamas compound operating inside the school, adding “many measures were taken in order to minimize the danger of damaging the uninvolved,” including aerial surveillance and “additional precise intelligence.”

CNN has reached out to the Pentagon and the State Department for comment.

This incident is 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.

At least 45 people were killed and more than 200 others injured on May 26 after a fire broke out following an IDF strike on a displacement camp in Rafah, most of them women and children, according to the Gaza Health Ministry and Palestinian medics. — CNN