A woman told police she was sexually assaulted by a man wearing a bus driver's uniform at the Shady Grove Metro station earlier this month.
The victim told police she was assaulted Dec. 12. and officials say both Metro and Ride-On bus drivers frequent the station.
Police say no other victims have come forward, and as far as they know, the incident is isolated.
The suspect is described as a white man, aged between 40 and 50 years, heavy set and standing approximately 5'4".