UPDATE 5:33 p.m.: Authorities have reportedly identified the suspect as Larry Russell Dawson of Tennessee, according to CNN.
UPDATE 5:01 p.m.: Capitol police officials say there is "no reason to believe that this is anything other than a criminal act," according to BuzzFeed News. During what was described as a "routine administrative screening," the suspect pulled "what appeared to be a weapon" after it triggered a metal detector. After pulling out the alleged weapon, the suspect was then shot by a Capitol officer.
UPDATE 3:57 p.m.: The lockdown has now been lifted at the Capitol complex, according to a report from CNN. Though the identify of the suspect has still not been released, the shooter is believed to be a male. A bystander was reportedly injured by shrapnel, though initial reports claimed the injured person was an officer. Capitol police ultimately shot and detained the suspect.
UPDATE 3:33 p.m.: The White House has now returned to "normal security conditions," a law enforcement official confirms to CNN.
See original story below.
Following reports of a shooting at Capitol Hill, the White House and related areas have been placed on lockdown. One person was shot and not seriously injured, according to the Associated Press. Though a suspected shooter has been detained, that person's identity has not been made revealed.
Capitol Police are ordering that all staff inside the Capitol complex continue to "shelter in place." Though the incident is believed to have been isolated to the Visitors Center, no additional information has been made available by local authorities. Capitol Police conducted a standard shelter-in-place drill earlier Monday morning, as noted by BuzzFeed News. Just hours after that simulated drill was completed, staffers were ordered to initiate a real-world lockdown following reports of shots fired.
"There has been an isolated incident at the U.S. Capitol," the DC Police Department tweeted shortly after the lockdown was put in place. "There is no active threat to the public."
This story is developing.