One man is in custody after he drove up to the checkpoint before the White House at 11:05 pm Saturday night, claiming to have a bomb in his vehicle, according to multiple reports by U.S. media.
Security at the White House was immediately upgraded and tightened. The driver was arrested and taken into custody. The vehicle was searched.
A number of streets around the White House remained closed Sunday in an ongoing security investigation. Two law enforcement officials told CNN no bomb was found in the vehicle.
There have been at least two other attempts to penetrate security on the grounds of the White House in recent weeks; both attempts were foiled.