UPDATE: Townhall's Leigh Wolf was on the scene and was able to speak to a few witnesses to the shooting.
UPDATE: Most things, other than the Visitor Center, have been re-opened and the shelter-in-place order has been lifted.
Sergeant at Arms: House, Senate and Library of Congress buildings open, Capitol Building open for official business, Visitor Center closed.— ABC News (@ABC) March 28, 2016
UPDATE: Earlier reports of an injured officer are false. A bystander was hit by shrapnel, but injuries are not serious.
Suspect was shot by U.S. Capitol Police. Female civilian bystander was injured by shrapnel. No Capitol Police officers injured— Noah Gray CNN (@NoahGrayCNN) March 28, 2016
UPDATE: The White House was on lockdown for an unrelated incident. The individual is now in custody.
UPDATE: According to AP Capitol police officer has been shot, but the injuries are described as "not serious." The shooter is also in custody.
BREAKING: Capitol officials say 1 Capitol police officer shot, not seriously, shooter in custody.— The Associated Press (@AP) March 28, 2016
UPDATE: The DC police are now saying that there is no threat to the public.
There has been an isolated incident at the US Capitol. There is no active threat to the public— DC Police Department (@DCPoliceDept) March 28, 2016
There are reports of shots fired at the Capitol Visitor Center. Tourists are being told to avoid the area and a shelter in place order has been issued. Congress and White House are both on lockdown.
BREAKING: Congress and White House on lockdown after reports of shooting on Capitol Hill.— The Associated Press (@AP) March 28, 2016
Here's the email that just went out to Hill staffers. Reports of shots fired in the Capitol Visitors Center. pic.twitter.com/VBjJKxJSQp— Lachlan Markay (@lachlan) March 28, 2016
Reports of shots fired in the CVC. Shelter in place order issued, per Senate alert.— Niels Lesniewski (@nielslesniewski) March 28, 2016
Gunshots reported in the Capitol Visitors Center, we hear over the loudspeaker. Shelter in place, we're told.— Emma Dumain (@Emma_Dumain) March 28, 2016
Capitol on lockdown. Gun shots at @uscapitol— ClotureClub.com (@ClotureClub) March 28, 2016
This post has been updated with additional information.