United States Capitol Police officers arrested a man carrying a shotgun Friday afternoon near the Capitol complex.
The police have closed off streets around the Capitol and are preparing to inspect his car.
A Capitol Police spokeswoman did not immediately respond to a call for comment.
Update - In a press briefing, Sgt. Kimberly Schneider of the U.S. Capitol Police just gave this statement on today's incident, which is still being investigated:
"At approximately one o'clock this afternoon, the U.S Capitol Police observed a man who appeared to be in possession of a shotgun. He was arrested, apprehended and is currently in Capitol Police custody. There are few details available about this individual at this time other than he is a white male. There is also is a vehicle that is associated with this individual located in in the area of North Capitol and D Street in the Northwest. Capitol Police are currently searching the vehicle. There are items of concern that Capitol Poliice have recovered, therefore the immediate area is restricted and vehicular and pededstrian is restricted until the area is clear."