An airstrike on Monday hit a base belonging to the paramilitary coalition Popular Mobilization Forces (PMF) coalition in northern Iraq, according to officials from the former paramilitary alliance, which includes pro-Iran factions.
One of the officials blamed the strike on the United States, saying it hit a base in Bartella area near the city of Mosul in Nineveh province, AFP reported.
Another PMF source and a local official confirmed the attack, with no casualties reported.
The PMF is an alliance of factions created in 2014 to fight militants and is now integrated into the Iraqi armed forces.
Iran-backed groups have brigades that operate within the PMF, but have a reputation for acting on their own.
Since the start of the Middle East war, bases belonging to PMF have been hit several times, with strikes targeting Tehran-backed armed groups.
These groups are also united under a loose alliance called the Islamic Resistance in Iraq, which has claimed attacks against US bases in Iraq.