Detrick monitoring situation. Officials looking for possible second shooter.
The U.S. Navy says one person is injured after a shooting at a Navy building in Washington.
Police and emergency crews gathered Monday morning outside the Naval Sea Systems Command Headquarters building, where the shooting was reported.
The Navy says three shots were fired and that that about 3,000 people work in the building. People inside the building have been directed to stay in place.
Naval Sea Systems Command is the largest of the Navy's five system commands and accounts for a quarter of the Navy's entire budget.
It builds, buys and maintains the Navy's ships and submarines and their combat systems.
Police from multiple local and federal agencies were responding along with SWAT crews.
In light of the shootings at the Navy Yard, officials with Fort Detrick, in Frederick, say no force protection levels have been changed at the installation. "We are monitoring the situation," said Jenny Benson, Garrison PIO.
UPDATED: 11:52 a.m.
Officials say at least one shooter has died at the Washington Navy Yard, where several people were killed and as many as 10 were wounded.
A Federal Law Enforcement official and a Defense Department official said Monday morning that a shooter had died. Both spoke on condition of anonymity because they were not authorized to discuss the ongoing investigation.
Two other officials have said they are looking into the possibility of a second shooter at the Navy Yard.