-- The U.S. service member who was killed in a vehicle rollover in northern Syria on Friday has been identified as Army Spc. Etienne J. Murphy, from Snellville, Georgia, military authorities said.
The U.S. Department of Defense said in a statement Saturday that the incident is under investigation.
Murphy, 22, was born in Boston and enlisted in the Army from his hometown in Georgia in June 2013. He was posthumously awarded the Army Commendation Medal.
The United States has slightly more than 900 military personnel in Syria to advise and assist Kurdish and Arab rebel forces fighting ISIS.
Two other American service members have died in Syria since U.S. troops arrived there in early 2016.
U.S. Air Force Staff Sgt. Austin L. Bieren, 25, died from suspected natural causes while deployed to northern Syria on March 28.
ABC News' Benjamin Stein contributed to this report.