The US Army says early reports indicate that a female soldier turned a gun on herself and fired one shot, injuring herself, on a central Virginia base.
The Army put Fort Lee on lockdown Monday morning, with a report of an active shooter. Officials say the soldier had a gun inside a four-story building that is the headquarters for the Army's Combined Arms Support Command.
Pentagon spokeswoman Alayne Conway says the shooter did not wound anyone, but she was uncertain of the shooter's status. Virginia Commonwealth University says one patient was brought in to its Medical Center but did not give other details.
The Fort Lee installation operations center issued the all clear at 9:50 a.m. EDT (1350 GMT), about 20 minutes after it had announced an active shooter. "The law enforcement event is over," the statement said.
The lockdown has been lifted.
Fort Lee is 130 miles (200 kilometers) from Washington and 25 miles south of Richmond, the Virginia state capital.
The military says it's the Army's third-largest training site.
(With inputs from Reuters)