Join the Sky News Breakfast team live as a blast at an Iraqi military base came from an airstrike from an unknown source, two security sources have told Reuters news agency.
One member of Iraq's Popular Mobilisation Forces has been killed and eight wounded during the overnight explosion at its Kalsu base, Reuters also reports.
Injuries and "material losses" have been reported after the explosion at the Kalsu facility in the city of Babylon, which is about 30 miles (50km) south of the capital Baghdad.
A US official said it wasn't caused by American military operations
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