WASHINGTON, May 6 (Reuters) - A car that trailed an official motorcade on to Pennsylvania Avenue prompted a security lockdown at the White House on Tuesday.
A Secret Service spokesman said the car entered the security checkpoint at 17th Street and Pennsylvania and was immediately stopped by Secret Service uniformed officers.
The male driver was arrested and Washington DC police checked the car for explosives.
People were unable to leave the White House grounds while the car was being checked out. (Reporting By Steve Holland; Editing by Sandra Maler)