Senior commander Abu Baqir al-Saadi of Kataib Hezbollah, an Iran-backed armed group in Iraq that the Pentagon linked to an attack that killed three U.S. troops, died in a drone strike on a vehicle in eastern Baghdad on Wednesday night, two security sources said.

One of the sources said three people were killed and that the vehicle targeted was used by Iraq’s Popular Mobilization Forces (PMF), a state security agency composed of dozens of armed groups, many of them close to Iran.