A group of Democratic senators led by Kirsten Gillibrand has called on the Trump administration to release the findings of a U.S. military investigation into a February 28 strike on a girls' school in Minab, Iran. Reuters previously reported that an initial internal investigation showed U.S. forces were likely responsible for the strike, which killed more than 175 children and teachers according to Iranian officials. The lawmakers' letter argues there is no justification for withholding an unclassified accounting of what happened and what went wrong. The Pentagon has stated the investigation is ongoing with no updates to announce. The strike occurred on the opening day of the war with Iran, and the school was located adjacent to a compound operated by the Islamic Revolutionary Guard Corps. U.S. Admiral Brad Cooper has described the investigation as 'complex' given the school's location on an active Iranian cruise missile base. President Trump has cast doubt on whether the U.S. was responsible, while Iranian officials have labeled the strike a war crime. The senators are demanding a prevention and remediation plan to ensure such an incident does not recur.