A driver has been shot after a car rammed into a barricade outside the US Capitol building and injured two police officers, law enforcement officials have said.
At least one officer was in serious condition, while the driver was in a critical condition, the Associated Press has reported.
US Capitol Police have said a suspect is in custody.
Staff inside the building in Washington DC were sent a message telling them no entry or exit was allowed and they were warned to stay away from exterior windows and doors.
The message added: “If you are outside, seek cover.”
It is not known what condition the person who was shot is in, and their identity has not been confirmed.
Both officers are thought to be injured.
All three have been transported to the hospital.