White House Bomb Threat Suspect Was Testing Secret Service

The man arrested for claiming he had a bomb in his car at the White House Saturday night was apparently testing security ... this after several major lapses.

Sean Patrick Keoughan approached a police officer near a White House entry point and told him, "There's a bomb in the trunk." The 29-year-old went on to say "this a test!" and was immediately tackled and taken into custody.

The 2017 Chevy Impala Keoughan was driving had been reported stolen in Virginia.