A UN inquiry has started investigating a fatal strike on a primary school on the first day of US-Israeli attacks on Iran, one of its members told reporters on Tuesday.
The attack on the Shajareh Tayyebeh School consisted of two missile strikes in quick succession that killed 168 children, mostly girls, Iranian officials said in Geneva on Monday.
Reuters reported on March 5 that US military investigators believe it is likely that US forces were responsible but have not yet reached a final conclusion or completed their investigation. The Pentagon has since elevated the probe.
"We're at an early stage of that investigation," Max du Plessis, a member of the UN Fact-Finding Mission on Iran, told a Geneva press conference, saying that it had credible reports backing Iran's death toll.
"It's clear to us that whatever happens in respect of such an event, given the innocent lives that have been lost, there is a critical need for such an investigation to be done and for an independent outcome to follow," he said.
If US fault is confirmed, it would rank among the worst incidents of civilian deaths in decades of US military strikes in the Middle East.

Damascus cafe blast kills 5, wounds 16
Russian air strikes kill 10, injure more than 50 in Ukraine's Kyiv
Firefighters battle wildfire in southern France
US, Iran talks conclude in Doha, focused on Strait of Hormuz
Trump honours Theodore Roosevelt in North Dakota, debuts new Air Force One
Kenyan court charges 8 schoolgirls with fellow students' murder
At least 5 people killed in fire in Antwerp apartment block
Three people die in Mexico World Cup celebrations as fans crowd streets
