U.S. Capitol Police were called in to assist Metropolitan Police Department officials in the arrest of two suspects following an armed robbery near the Capitol. First District Commander David Kamperin posted to the 1-D listserv details of the arrest, which followed a foot pursuit. Capitol Police confirmed a tip to DCist that entrances to the Adams Building were closed temporarily this afternoon as police looked for the suspects. The two men — both in MPD custody — are said to have used a gun in a hold-up at the corner of 6th and A Street NE at around 3:30 p.m. this afternoon. Did you see a couple guys hauling ass from the Library of Congress like they were in some real trouble over late fees?