Photo by Jacques Arsenault.

Photo by Jacques Arsenault.

Update 4: CNN reports that U.S. Capitol Police shot a male suspect, and a female bystander was injured by shrapnel.

The lockdown at the Capitol complex has been lifted and tourists have been released from the Visitor Center, which remains closed.

Update 3: D.C. Police said there is “no active threat” to the public, and that the incident was isolated to the U.S. Capitol.

The lockdown at the White House has since been lifted. CBS News White House Correspondent Mark Knoller reports that it was a precautionary measure.

Update 2: The shelter-in-place at the U.S. Capitol remains in place as police continue to investigate, according to the Senate Sergeant At Arms.

Update 1: The shooter is now in custody, the Associated Press reports. Officials says that one person was shot but the injuries aren’t serious.

Original:

Staffers and others on the Hill are reporting gunshots at the U.S. Capitol Visitors Center.

D.C. Police have responded to reports of a shooting in the first block of 1st Street, though they have not yet confirmed the account, an MPD spokeswoman said.

The U.S. Capitol Police have put the entire Capitol complex under lockdown.

The White House has also been locked down.