UPDATE: 3:50 PM EST
According to NBC, investigators have ruled out two other suspects in the Navy Yard shooting. 12 are confirmed dead.
The shooter, who is now deceased, has been identified as Aaron Alexis, a 34-year-old from Texas who was just hired as a civilian contractor before the shooting.
Updated 1:14PM EST
One suspect but two others may still be at large, D.C. police chief Cathy Lanier said in a press conference. Authorities are looking for a black man and a white man in military-styled clothing.
“The big concern for us right now is that we potentially have two other shooters that we have not located at this point,” said Washington Police Chief Cathy Lanier.
President Obama publicly spoke on the shooting:
“We will do everything in our power to make sure whoever carried out this cowardly act is held responsible,” President Barack Obama said. “We are confronting yet another mass shooting. And today it happened on a military installation in our nation’s capital.”
Updated 12:15am EST:
We are now getting reports that 1 gunman is dead, 2 other shooters potentially are at large, 10 people have been shot and multiple victims killed, at the D.C. Navy Yard where a gunman went on a shooting rampage. Police say the shooter is down, uncertain whether he has been shot.
Former FBI agent and ABC news consultant Brad Garrett says the security breach that allowed a gunman to enter a heavily guarded government building is disturbing:
Washington is just a target-rich place. I mean, bad guys, for whatever their motivation, love to attack this place. And so that’s something else I guarantee you they’re looking at is, is this just contained to the Washington Navy Yard and hopefully
A gunman opened fire inside the sea systems command building at the Navy Yard.
Frank Putso is a Navy Yard attorney who was attending a meeting on the fourth floor of the building when the shots rang out:
We heard three sounds which I described like a table falling onto the ground. We came out of our offices to check it out and there was a very loud, unmistakably a gunshot, that fourth one that couldn’t have been more than a 100 feet from where we were.
D.C. police and the FBI say the suspect has been contained but not yet in custody.
Police are responding to reports of shots fired, and an FBI spokeswoman says there’s several confirmed injured including two D.C. officers.
SWAT teams are telling employees to “shelter in place” as they go room to room, looking for a man reported to have at least three weapons.
The U.S. Navy also confirmed on Twitter that they’re looking for a gunman. ABC’s Steven Portnoy has more details:
We are blocked several blocks perhaps as much as a half-mile away from the entrance to the Navy Yard, a huge manner of D.C. police and federal officers controlling the scene here which is adjacent to the new headquarters of the Department of Transportation.
And several dozen workers from this building are now on the street being blocked off by yellow police tape as we watch police cars with their sirens and lights race by and overhead there are federal helicopters surveying the scene from the air.
The Washington Navy Yard is 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.