A drone strike on Wednesday hit a vehicle in the Iraqi capital Baghdad, killing two commanders of a pro-Iran group, a security source and a group member said.
The attack comes as tensions soar, with the United States carrying out strikes on pro-Iran groups in Iraq and Syria amid the war in the Gaza Strip.
One of those killed was a commander of the Kataeb Hezbollah group in charge of military affairs in Syria, a member of the pro-Iran Iraqi group told AFP on condition of anonymity.
A security source also reported the deaths of two officials from the group, which has taken part in attacks on US forces in Iraq in the past.
There was no immediate claim of responsibility for the drone strike.