TEHRAN, Iran (AP) — Iran state TV says Tehran has launched “tens” of surface-to-surface missiles at Iraq’s Ain Assad air base housing U.S. troops over America’s killing of a top Iranian general.

State TV described it early Wednesday as Tehran’s revenge operation over the killing of Revolutionary Guard Gen. Qassem Soleimani.

U.S. forces could not be immediately reached for comment.

Ain Assad air base is located in Iraq’s western Anbar province. It was first used by American forces after the 2003 U.S.-led invasion that toppled dictator Saddam Hussein. It later saw American troops stationed there amid the fight against the Islamic State group in Iraq and Syria.

State TV said the operation’s name was “Marytr Soleimani.” It said the Guard’s aerospace division, which controls Iran’s missile program, launched the attack.