A UN fact-finding mission on Iran has said it had reasonable grounds to believe the United States was behind two military strikes on a school and sports facility in Iran in February, and that these constituted war crimes, AFP reports.

The findings in a new report by the Independent International Fact-Finding Mission on Iran, to be submitted to the UN Human Rights Council in Geneva, examined the US’s conduct during the Iran war that began in February and the Iranian government’s response to nationwide unrest that began in late December.

The UN experts said they found reasonable grounds to believe US forces were responsible for an attack on the Shajareh Tayyebeh Primary School in the city of Minab, where more than 150 people were killed, including around 120 schoolchildren.

UN experts said the school was a clearly identifiable civilian object and found no evidence that it was being used for military purposes.

The experts reached a similar conclusion over a strike on a sports centre in Lamerd.

They also found that Iranian authorities committed crimes against humanity during their deadly crackdown on anti-government protests.