An active shooter lockdown at Washington’s Navy Yard near the U.S. capitol has just been declared this morning, as police seek for at least two gunmen.
No casualties have yet been reported on the 41-acre military complex.
Security forces there say that a search of the premises is underway and that in addition to an active shooter lockdown alert, a shelter-in-place order has also been issued.
U.S. Park Police, Marshals and officers from Homeland Security are on the scene and have closed access points and local roads to the Navy Yard, as well as monitoring pedestrian traffic.
Established in 1799, the Washington Navy Yard is the oldest onshore naval facility in America and is the headquarters of Naval Sea Systems Command and the Department of Naval History, among other critical divisions.
It has been penetrated by an armed shooter before -- and was the sight of a mass shooting -- as recently as 2013.