Law enforcement sources say one person was shot by law enforcement and the suspect is in custody.
Reports indicate that a suspect approached a Secret Service agent, brandished a weapon, and was then shot in the abdomen.
The lockdown has been lifted, with officials saying the situation was under control.
— U.S. Secret Service (@SecretService) May 20, 2016
DC emergency services report that the injured man has been transported to the hospital with critical injuries.
President Barack Obama was not on the property, but snipers were placed on the roof as police blocked off surrounding streets.
— Mayor Muriel Bowser (@MayorBowser) May 20, 2016
A spokesman for Vice President Joe Biden said that the VP was on the White House grounds at the time of the shooting, but he has been moved to safe grounds.
Emergency services rushed to the scene, and heavy security blocked off a wide perimeter around the White House complex.