Munitions made in the United States were used in the deadly Israeli strike on a displacement camp in Rafah on Sunday, a CNN analysis of video from the scene and a review by explosive weapons experts has found.

At least 45 people were killed and more than 200 others injured after a fire broke out following the Israeli military’s strike on the outskirts of Gaza’s southernmost city, most of them women and children, according to the Gaza Health Ministry and Palestinian medics.

Footage obtained by CNN showed swathes of the camp in Rafah in flames, with scores of men, women and children frantically trying to find cover from the nighttime assault. Burned bodies, including those of children, could be seen being pulled by rescuers from the wreckage.