(CNN) — Authorities declared all-clear Monday at Fort Lee in Virginia after a lockdown because of a reported active shooter, the Army installation said.
The installation was locked down after an incident reported at Building 5020 of the Combined Arms Support Command headquarters.
Fort Lee is near Petersburg, Virginia, about 30 miles south of Richmond and 135 miles south of Washington.
Retired Maj. Gen. James “Spider” Marks, a CNN military analyst, described the post as a “very active” one, with soldiers “routinely coming and going to get various types of training.”
In an active shooter situation, he said, everyone locks down in place to avoid becoming a target while letting authorities and military police respond.