Ward 4 Councilmember Muriel Bowser is now being interviewed on WRC-TV about the deadly train crash on the Red Line. "We have seen the police department and the fire department respond in a very coordinated way," says the councilmember, who represents the area in which the collision occurred.

At this moment, Dr. Gridlock is in the vanguard of Washington Post coverage of this afternoon's train mishap in Northeast D.C. The item credits WJLA-TV and CNN for key facts on the accident.
Here's one commenter from the washingtonpost.com on the matter:
How is the Washington Post being scooped about a potentially serious metro rail collision? This [...]

Comes this dispatch, via Dr. Gridlock:
A Red Line Metrorail train derailed at 5:10 p.m. approaching Fort Totten in the Shady Grove-bound side. Trains are turning back at Brookland and Takoma....Metro says that shuttle bus service has been requested to bridge the gap between Takoma and Brookland.

There are reports of injuries. Developing.
UPDATE, 5:35 P.M.: This seems [...]