Reuters reports a tactical vehicle flipped over on Thursday in a training area near the U.S. Military Academy in West Point, New York.
At least one cadet was killed and nearly two dozen cadets and active-duty soldiers were injured.
The accident occurred at about 6:45 a.m.
Near the Camp Natural Bridge, a summer training site for cadets.
The injured were transported to nearby hospitals.
The academy offered no further details about the incident.
CBS News reported earlier that two people were killed.