Jan 20 (Reuters) - Multiple ballistic missiles and rockets were launched by Iranian-backed militants in Western Iraq targeting al-Asad air base in Iraq on Saturday, the United Sates Central Command(CENTCOM) said in a statement.

Most of the missiles were intercepted by the base's air defense systems while others impacted on the base, the statement added.

Damage assessments are ongoing, and a number of U.S. personnel are undergoing evaluation for traumatic brain injuries, and at least one Iraqi service member was wounded, CENTCOM statement said.

(Reporting by Gursimran Kaur in Bengaluru; Editing by Chizu Nomiyama)