Military officials say two North Carolina-based Marine sergeants have been killed in Afghanistan.

The Department of Defense announced on Wednesday that 22-year-old Sgt. Derek L. Shanfield of Hastings, Pa., and 24-year-old Sgt. Zachary J. Walters of Palm Coast, Fla., died on June 8 in Helmand province.

Shanfield and Walters were assigned to 2nd Battalion, 6th Marine Regiment, 2nd Marine Division, II Marine Expeditionary Force at Camp Lejeune.