ANBAR, Iraq (Reuters)—Two Katyusha rockets on Monday were fired at Iraq's Ain al-Asad air base which hosts U.S. and other international forces in western Iraq, security sources said.

It was not clear if the attack caused any casualties or damage inside the base, the sources said.

One security source said the rockets fell inside the base.

(Reporting by Kamal Ayash and Timour Azhari; Editing by Chris Reese)