A police officer is reported hurt after gunfire today at the U.S. Capitol building.
The Senate's Sergeant at Arms, Terrance Gainer, says, "There are reports of injuries." FBI agents headed to the scene.
The entire complex was put on lockdown. The lockdown has been lifted.
As the warning was sounded, the House abruptly went into recess and lawmakers left the chamber floor. The House had just finished approving legislation aimed at partly lifting the government shutdown by paying National Guard and Reserve members.
Across the street, people standing outside the Supreme Court were hurried into the court building.
The White House was quickly locked down after the incident, and the stretch of Pennsylvania Avenue in front of the compound was closed to pedestrians.
The gunfire comes two weeks after a deadly shooting at the Navy Yard, near the Capitol.