By Barbara Starr and Jim Sciutto

PHILADELPHIA (CNN) — An American service member was killed in an indirect fire rocket attack on a base at Makhmur in northern Iraq, a U.S. official told CNN Saturday.

READ MORE: CBS3 Mysteries: Don Ly's Children Continue To Search For Answers After Father's American Dream Ended In Deadly Stabbing In South Philadelphia

The base is located where the U.S. conducts advise-and-assist activities. The service member was on security duty there for force protection. A small number of other American troops were wounded in the attack, but the official declined to say how many or how seriously.

The official did not identify the service member killed as the family has not yet been notified.

READ MORE: Camden County Businesses, Officials Worry As Heavy Rains, Flooding Become More Common

The Combined Joint Task Force-Operation Inherent Resolve confirmed the death of a coalition service member in a news release.

The last U.S. service member to be killed in Iraq as a result of hostile enemy action was Army soldier Master Sgt. Joshua L. Wheeler, of Roland, Oklahoma, who died in October during a rescue mission in northern Iraq. Wheeler was the first American to die in combat in Iraq since November 2011.

MORE NEWS: Upper Darby Police Investigating Death Of Newborn Found In Bag

The-CNN-Wire ™ & © 2016 Cable News Network, Inc., a Time Warner Company. All rights reserved.