Photo by the Associated Press
Details surrounding the Washington Navy Yard shooting are still developing, but here's a breakdown of the facts so far:
The Navy first reported via Twitter that there was an "active shooter" at Building 197 at the Navy Yard, and that shots had been fired at 8:20 a.m. ET
Twelve total deaths are reported, according to Washington Metropolitan Police Chief Cathy Lanier. This includes the dead shooter. The number of injuries is not confirmed.
The shooter, or shooters
Aaron Alexis is confirmed as the shooter by an FBI source. Lanier said police are searching for one more possible shooter: A black man around 50 years old wearing an olive military style uniform and carrying a long gun.
A federal official said there is no evidence that anyone other than the dead gunman, fired weapons in the attack. The official said investigators were analyzing surveillance video and other information that revealed two people, as Lanier described.
Naval Sea Systems Command headquarters in Building 197 at the Washington Navy Yard. The headquarters is the workplace for about 3,000 people.
The sea systems command is responsible for engineering, building, buying and maintaining ships, submarines and combat systems for the fleet. The sea systems command is the largest of the Navy's five system commands, with an annual budget of nearly $30 billion.
•The area around the Navy Yard has "shelter-in-place" orders.
•Marine Barracks Washington is on partial lockdown.
•Washington Nationals MLB game against the Atlanta Braves has been cancelled.
•Flights in and out of Washington Reagan National Airport were stopped this morning but resumed before 11 a.m.