The U.S. Capitol was�placed on lockdown Monday after shots were fired at the U.S. Capitol Visitor Center.

The suspected gunman�was captured and the Metropolitan Police Department said there was no active threat to the public.�

In a press conference Monday afternoon, Capitol Police Chief Matthew Verdosa explained that the male suspect drew his firearm during a security screening while entering the visitor center, prompting officers to take action. Police officers opened fire, shooting the suspect who has been transferred to a local hospital to treat his injuries.�

The suspect was known to Capitol Police, Verdosa added, as he had visited the Capitol grounds in the past. Verdosa also explained that there was "no reason to believe that the incident was anything other than a criminal act."

In addition to the shooter, a 35- to 40-year-old woman suffered minor injuries during the shooting, Verderosa said.

Congress is in recess, but staffers and tourists were in the building at the time of the shooting and urged to shelter in place, according to a message sent out by the Senate Sergeant at Arms.�

?An e-mail sent to Hill staffers said the building was in lockdown �due to a potential security threat.� Another e-mail alert advised staff to move to shelter in locations and grab emergency supply kits.

The shooting was contained to the visitor�s center, which is part of an underground complex on the east of the Capitol building that�was built toexpand the Capitol's security perimeter? after a shooting in 1998.�

?This is a developing story. Security Management will continue to update this post as more information becomes available.