Police surround man with possible explosives near US Capitol

WASHINGTON - Law enforcement officials surrounded a man with possible explosives sitting in a vehicle near the U.S. Capitol on Thursday, as nearby buildings were evacuated and emergency vehicles rushed to the scene about a mile from the White House.

"This is an active bomb threat investigation," the U.S. Capitol Police said on Twitter. The man was in a vehicle outside the Library of Congress, across the street from the Capitol, a U.S. law enforcement source said.