Updated at 2:31 p.m., Monday: D.C. Police Chief Cathy Lanier has reported 12 fatalities, according to the U.S. Navy.
This morning's deadly rampage at Navy Yard has left at least seven people dead and eight wounded, according to police, while D.C. Police Chief Cathy Lanier said that police are still looking for one or possibly two additional shooters. The shooting and ensuing manhunt has closed schools and administration buildings, and briefly halted flights out of Reagan National Airport.
To stay informed, follow the below sources for live updates, Tweets, and more:
CNN's live blog
Washington Post regional coverage
New York Times' The Lede blog
D.C. Police Department Twitter
D.C. Fire and EMS Twitter
Our hearts are with the wounded and families of the victims; we'll update this post with more updates as we have them.