WASHINGTON (AP) -- At least one gunman opened fire inside a building at the Washington Navy Yard on Monday morning, and officials said 13 people were killed and at least four were wounded, including a law enforcement officer.
Police were looking for two other potential gunmen wearing military-style uniforms, including one who had on a beret, chief Cathy Lanier said. One had a long gun and the other was also armed, she said. One of the three gunmen had died, though Lanier didn't say how.
Suspect Aaron Alexis, 34, was discharged from the Navy in 2011 and according to NBC Chicago spent time training at the Great Lakes Naval Station in Great Lakes, Ill, just 55 miles south of Milwaukee:
Illinois connection -- > Mass shooting suspect graduated from boot camp at Naval Station Great Lakes: http://t.co/IBxOlkFDYh— NBC Chicago (@nbcchicago) September 16, 2013
Witnesses described a gunman opening fire from the fourth floor, aiming down on people in the first-floor cafeteria. Others said a gunman fired at them in a third-floor hallway. It wasn't clear whether the witnesses on different floors were describing the same gunman.
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.
President Obama gave a statement Monday morning about the lives lost.
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.
The U.S. Navy also confirmed on Twitter that they're looking for a gunman.
The Washington Navy Yard says on its website that it's the Navy's oldest shore establishment. It's home to the chief of Naval Operations and is also headquarters for the Naval Historical Center and numerous naval commands.