April 8 (UPI) -- Three U.S. service members died Monday when an improvised explosive device detonated near Bagram Air Base in northeastern Afghanistan, NATO officials said.
The explosion also injured three U.S. service members, who were evacuated for medical care.
The Taliban claimed responsibility for the attack, Stars and Stripes reported. The militant group described the IED as a suicide car bombing and said it destroyed an armored military vehicle.
The service members were serving in Afghanistan as part of NATO's Resolute Support mission to train and advise Afghan military forces.
In a tweet Monday, Secretary of State Mike Pompeo condemned the attack, saying the United States' mission would not be deterred.
"I condemn this disgusting terrorist act," he said. "U.S. service members have sacrificed their lives in Afghanistan to keep us safe and no cowardly act of terror will impede our efforts to achieve peace."
NATO's Resolute Support mission in Afghanistan has about 17,000 troops. About half are supplied by the United States.