QUOTE
Rep. Bob Ney, R-Ohio, chairman of the House Administration Committee, said that at about 1:20 p.m. EST an individual went through the metal detector and put a bag that looked like a bookbag on the conveyor belt at the security checkpoint.
Ney said police saw an object that looked like a revolver in the bag, but before they could stop the suspect grabbed the bag and ran.
They pursued the suspect and lost the person, he said, and the building was evacuated, he said. Entrances to connecting office buildings, the Capitol and the Library of Congress were shut down.