U.S. personnel are injured after Iranian-backed militants attacked an Iraq air base

This Dec. 29, 2019, aerial file photo taken from a helicopter shows Ain al-Asad air base in the western Anbar desert, Iraq. (Nasser Nasser/AP)

An unknown number of U.S. service members and at least one Iraqi service member suffered injuries in an attack by Iranian-backed militants on an air base in western Iraq, U.S. officials said.

A barrage of missiles and rockets targeted the Ain al-Asad base on Saturday evening, U.S. Central Command said in a statement.