US President Donald Trump said it may never be known who was at fault for a ​deadly strike on a girls’ school in Iran on February ‌28, the first day of the Iran war, that killed scores of children, Reuters reports.

Reuters reported in March that an initial internal US military investigation showed US forces were likely responsible ​for the fatal strike in Minab in southern Iran.

The Pentagon ​has since elevated the probe but it has not acknowledged any ⁠preliminary findings.