The school in Minab, Iran, that was purportedly hit erroneously by U.S. forces during the opening salvo of the war is on an “active IRGC cruise missile base,” CENTCOM Commander Adm. Brad Cooper said.

The U.S. military is investigating whether it was responsible for a strike that occurred on Feb. 28, the first day of the war, that killed more than 150 people, a majority of whom were school children. In the aftermath of the strike, the military initiated an investigation led by an outside investigating officer, whose identity has not been shared publicly.