A U.S. soldier was killed while conducting operations against ISIS in Afghanistan late on Saturday, a U.S. military spokesman said in a message posted on Twitter.
"The soldier was mortally wounded late Saturday during an operation in Nangarhar Province" in eastern Afghanistan, U.S. Navy Captain Bill Salvin said in a message on the official Twitter account of the NATO-led Resolute Support mission.
He was the first U.S. soldier casualty in Afghanistan in 2017 for the Resolute Support mission, a NATO spokesman confirmed to NBC News. The circumstances of his death were unclear.
As Reuters reports, in 2016, nine American service members were killed in action in Afghanistan as part of the mission.