This is a developing story. We will continue to update this article as more information becomes available.
UPDATE - 11:22 p.m. ET: A shooting rampage at the Washington Navy Yard on Monday has left 13 people dead, including the gunman, according to multiple reports.
The FBI identified the suspected shooter as Aaron Alexis, 34, whose last-known address was in Fort Worth, Texas.
Police are on the hunt for a suspect or suspects who shot 10 people at the Washington Navy Yard, according to reports. The U.S. Navy said three shots were fired around 8:20 a.m. Monday at the Naval Sea Systems Command Headquarters building.
As more information becomes available, Mashable will continue to update this article with credible sources to follow online about this breaking news event.
On-Scene Reporters and Outlets
Six D.C. public schools are on lockdown http://t.co/Ibp9xDuCXf— Post Local (@postlocal) September 16, 2013
Emmarie Huetteman -- News clerk, The New York Times
Just arrived at Navy Yard. Lots of emergency personnel down M Street. pic.twitter.com/TZ4scVMCXq— Emmarie Huetteman (@ehuetteman) September 16, 2013
#BREAKING: #USNavy will release more information on #NavyYardShooting as confirmed. Release at http://t.co/attHih9DTU— U.S. Navy (@USNavy) September 16, 2013
Tony Tull -- News4
Worker from first floor describes hearing shots and running from the building. pic.twitter.com/Gi9PvUmi9z— Tony Tull (@Tony_Tull) September 16, 2013
Correction: Navy Yard: family members may reunite at Nationals Stadium Parking Lot B, South Capitol & N St SE— DC Police Department (@DCPoliceDept) September 16, 2013
Vincent C. Gray -- D.C. Mayor
There is no active shooter at Joint Base Anacostia-Bolling.— Vincent C. Gray (@mayorvincegray) September 16, 2013
Scott MacFarlane -- NBC 4 I-Team Reporter
Out of caution - DC schools lockdown two more schools— Scott MacFarlane (@MacFarlaneNews) September 16, 2013
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