Democrats in the US Senate have written to Defence Secretary Pete Hegseth demanding answers about the strike on a primary school in Iran that Iranian officials say killed 168 people, including about 110 children.
US media have reported that US military investigators believe American forces were likely responsible for hitting the school unintentionally at the start of the joint US-Israeli operation - but that they have not reached a final conclusion.
The Pentagon said it would respond directly to the authors of the letter, as with all congressional correspondence.
Asked last week by the BBC about the strike, Hegseth said the US did not target civilians and was investigating the issue.
The letter is from nearly every Senate Democrat, and asks a series of detailed questions about the strike in Minab - starting with whether the US carried it out.
