Evidence

Multiple independent news outlets corroborate this claim as an actual reported finding rather than a piece of circulating misinformation. CBC News, NPR, Al Jazeera, Bloomberg, The Japan Times, and World Socialist Web Site all report that a UN-mandated fact-finding mission (presented to the Human Rights Council in Geneva) found 'reasonable grounds to believe' the United States committed war crimes in two late-February strikes on Iran — a Tomahawk cruise missile strike on the Shajareh Tayyebeh Primary School in Minab and a strike on a sports complex/hall in Lamerd, Fars province. Bloomberg specifically notes 'The US has yet to publicly accept responsibility for the school strike,' consistent with the claim that Washington has not acknowledged carrying out the strikes. Wikipedia entries on the '2026 Minab school attack' and '2026 Lamerd sports hall attack' also reflect these same details (casualty figures, dates, UN investigation conclusions). I did not find a dedicated Reuters Fact Check, AFP Fact Check, Bellingcat, or EUvsDisinfo article specifically fact-checking this claim as a piece of viral misinformation — rather, it appears to be accurately summarized straight news reporting of a real UN report, not a disputed or fabricated viral claim.