"The vehicle was discovered submerged in a body of water on a training range following search efforts by the U.S. Army, Lithuanian Armed Forces, and other Lithuanian authorities," the command said in a statement.
Search efforts for the soldiers are still ongoing.
At the time of the incident, the U.S. troops were participating in a scheduled tactical training exercise.
Lithuanian media had earlier reported that four American soldiers had gone missing during exercises near the border with Belarus.
Meanwhile, Lithuania’s Armed Forces confirmed the disappearance of a tracked vehicle during the drills. Lithuanian journalists, citing unnamed sources, suggested that the American soldiers may have died, though that information has not been officially confirmed.