BAGHDAD (CNN) -- Several mortars landed in Baghdad's heavily fortified Green Zone on Thursday, as the U.S. military -- which is based there -- celebrated Thanksgiving Day, an Iraqi interior ministry official told CNN.
U.S. military spokesman Lt. Justin T. Cole confirmed "an indirect fire attack on the International Zone this evening," but offered no details.
There were no initial reports of casualties. A black plume of smoke reached into the sky above the Green Zone after the attack, which happened around 5 p.m. (9 a.m. ET).
It is common for insurgents to lob mortars and rockets into the Green Zone -- attacks that usually result in no casualties -- but it had been over a week since such an attack has occurred.