Preliminary inquiry says U.S. struck school in Iran that killed at least 175, mostly children

An ongoing military investigation is pointing toward the U.S. being responsible for a missile strike that hit an Iranian elementary school on the first day of Operation Epic Fury.

According to multiple reports, a Feb. 28 Tomahawk strike on the Shajarah Tayyebeb elementary school building was the result of targeting mistakes by U.S. Central Command and the Defense Intelligence Agency.

"Officials emphasized that the findings are preliminary and that there are important unanswered questions about why the outdated information had not been double-checked," The New York Times reported.