A number of Lebanese Hezbollah and Iranian Revolutionary Guards members were wounded on Friday when an unmanned drone dropped explosives on a base belonging to Iran-backed Popular Mobilization Forces (PMF) in northern Iraq.
Iraqi security officials and a military statement said the drone dropped two grenades half an hour apart on the base in Amirli, in Iraq's northern Salaheddin province. No further details were provided.
Al-Arabiya television had reported that at least two Hezbollah members were killed.
There was no immediate claim of responsibility for the attack, which struck shortly after midnight.
The PMF blamed the ISIS group, saying it confronted the attack without providing details.
A senior PMF official told The Associated Press that the attack resulted in the wounding of two Iranians and that the base hit housed advisers from Iran and Lebanon.
He said the first attack targeted the headquarters of the advisers, resulting in the wounding of the two Iranians.
The second attack hit a weapons depot, causing a large fire at the base. The official spoke on condition of anonymity to disclose sensitive information.
An Iraqi official said ISIS militants were most likely behind the attack, ruling out a US-led coalition or American attack. He spoke on condition of anonymity in line with regulations.
A Pentagon spokesman denied US involvement.
