Iran-backed armed groups have targeted US troops in Iraq hours after Tehran vowed revenge and blamed Israel for a deadly attack on a building housing its elite forces in the Syrian capital Damascus, driving fears of wide regional conflict.

The attack caused one Iraqi and possible American casualties, the US Central Command (CENTCOM) said on Saturday, and came hours after Tehran vowed to take revenge against Israel for its strike targeting the Iranian Revolutionary Guards Corps (IRGC) in Syria.

“Multiple ballistic missiles and rockets were launched by Iranian-backed militants in western Iraq targeting al-Assad Airbase,” CENTCOM said on X.