Another U.S. service member was wounded and is currently in stable condition.
Additionally, six Afghan soldiers were wounded.
"On behalf of all U.S. Forces – Afghanistan, as well as Resolute Support, our deepest sympathies go out to the families and friends of those involved," said Gen. John W. Nicholson, commander of USFOR-A and Resolute Support.
"We are deeply saddened by this loss, but remain committed to helping our Afghan partners provide a brighter future for themselves and their children," Nicholson said.
The service member was killed conducting Train, Advise, Assist activities with Afghan counterparts under NATO authorities when their patrol triggered an Improvised Explosive Device.
An investigation is being conducted to determine the exact circumstances of the event.
U.S. Department of Defense policy is to withhold the identity of the service member pending next-of-kin notification. We will release additional information as appropriate.