Police respond to a suspicious package at the Capitol

The Rayburn House Office Building is being evacuated by US Capitol police after a "suspicious package" was found.
National Guard and fencing security measures at U.S. Capitol
National Guard and fencing used as security measures at U.S. Capitol
(Sarah Silbiger/Getty Images)

U.S. Capitol Police say officers responded Wednesday to a suspicious package found inside a Capitol office building. 

Multiple new agencies said the package was found inside the Rayburn Building, home to House members' offices and hearing rooms. 

NBC 4 investigative reporter Scott MacFarlane tweeted the package was found near a ground-floor-level Rayburn meeting room.

Capitol police have been on watch for a credible threat or attack since the Jan. 6 riot.