A law enforcement official says a shooting at the United States Capitol is related to a vehicle that tried to ram a security barricade at the White House.
The official says a driver tried to drive through a barricade that blocks the stretch of Pennsylvania Avenue in front of the White House to vehicles. The driver then proceeded down Pennsylvania Avenue to Capitol Hill, where shots were fired.
The official was not authorized to publicly discuss the incident by name and insisted on anonymity.
Capitol was put on a security lockdown amid reports of possible shots fired outside the building.
People standing outside the Supreme Court across the street from Congress were hurried into the court building by authorities.
In a notice distributed by email, the U.S. Capitol Police advised everyone to "close, lock and stay away from external doors and windows.The notice said gunshots have been reported on Capitol Hill. There are unconfirmed reports of an officer injured.
The lock down has since been lifted.