BREAKING: U.S. Army base in Virginia locked down after report of active shooter

The US Army's Fort Lee base in the state of Virginia has been put on lockdown following reports of an "active shooter" at the facility. Fort Lee's Twitter account carried a warning concerning the four-storey Cascom (Command Arms Support Command) HQ, Building 5020.

It said: "The installation has been locked down until further notice."

Active shooter incident reported at CASCOM HQ, Bldg. 5020. All personnel enact active shooter protocols immediately. Post on lockdown.
— U.S. Army Fort Lee (@ArmyFortLee) August 25, 2014

Local media later reported the base had been given the all clear. Fort Lee's daily population is about 34,000.

Fort Lee is situated about 25 miles (40km) south of Richmond, Virginia, and about 130 miles from Washington DC.

In April, three soldiers were killed and 16 wounded when army Specialist Ivan Lopez opened fire at the Fort Hood Army base in Texas before taking his own life.