Seven US military personnel were killed and several more wounded in an accident during a Marine Corps training exercise in Nevada, the military said Tuesday.
"A fatal incident occurred during a training exercise shortly before 10 pm Monday at Hawthorne Army Depot, Nevada, killing seven service members and injuring several others with 2nd Marine Division," the Marine Corps said.
The cause of the incident was under investigation, it said without providing details. Earlier, Marine officials said that an explosion had occurred during the exercise.
Major General Raymond C. Fox, the commander of the II Marine Expeditionary Force, said: "We mourn their loss, and it is with heavy hearts we remember their courage and sacrifice."
The 2nd Marine Division is based in Camp Lejeune, North Carolina.