The White House was also on lockdown after the incident.
The U.S. Capitol was placed on lockdown on Monday after shots were reportedly fired in the Visitors Center area.
A man attempted to go through the metal detectors at the Capitol Visitor Center entrance but when those magnetometers beeped, he was stopped by security and then pulled out what appeared to be a weapon, CNN reported.
A Capitol police officer then shot the man, CNN reported. He was taken into custody and brought to a local hospital to be treated, authorities said.
A female bystander was also injured by shrapnel, but no U.S. Capitol Police officers were injured as initially reported, officials said.
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CBS News reported that the suspect is 66-year-old Larry Dawson. No charges have been filed but he could appear in court on Tuesday, CBS reported.
The Capitol and the White House were locked down in response. The facilities were reopened for business purposes about an hour after the incident, the Senate Sergeant at Arms tweeted.
Per USCP, shelter in place has been lifted and the Capitol is open for official business only. Capitol Visitor Center remains closed. #alert
— SenateSergeantAtArms (@SenateSAA) March 28, 2016
The D.C. Police said the incident was isolated and there were no active threats 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
The shooting occurred during a peak in tourist activity in the complex, as tourists and school groups visit during their spring breaks.
Congressional staffers were sent a notice to shelter in place, instructing them to lock doors and move to assigned shelter areas. Those outside the buildings on the Capitol complex were told to "seek cover away from the area," CNN wrote.
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