US military investigators believe they may have struck an Iranian girls' school, killing scores of children, but a final conclusion has not been reached.
The Pentagon is investigating the incident, which occurred during US and Israeli attacks on Iran, but officials have not ruled out the possibility of new evidence emerging that absolves the US of responsibility.
The girls' school in Minab, southern Iran, was hit on Saturday, killing an estimated 150 students, according to Iran's ambassador to the UN in Geneva.
The White House has denied targeting civilians, but the US Secretary of State has referred to the Department of War to investigate the matter.
The UN human rights office has called for an investigation into the strike, which would be a war crime under international humanitarian law if confirmed.
