The United States military said on Sunday it carried out "defensive strikes" in Iraq and Syria against the Kataib Hezbollah armed group, two days after a US civilian contractor was killed in a rocket attack on an Iraqi military base.
Iraqi security and militia sources said at least 25 fighters were killed and at least 55 wounded following the air attacks in Iraq.
Sources said, adding that one of the raids had hit the Iran-backed group's headquarters near the western al-Qaim district on the border with Syria.
"In response to repeated Kataib Hizbollah (KH) attacks on Iraqi bases that host Operation Inherent Resolve (OIR) coalition forces, US forces have conducted precision defensive attacks against five KH facilities in Iraq and Syria that will degrade KH's ability to conduct future attacks against OIR coalition forces," chief Pentagon spokesman Jonathan Hoffman said in a statement.
The targets - three in Iraq and two in Syria - included weapons-storage facilities and command locations used to plan and execute attacks, the statement added.