Published reports say President Barack Obama rode an elevator this month with an armed security contractor who had three criminal convictions, a violation of Secret Service security protocols.

The latest embarrassment for the Secret Service comes after agency Director Julia Pierson took full responsibility for a Sept. 19 breach of the White House. The Washington Examiner and The Washington Post report that the latest incident took place in an elevator during Obama’s Sept. 16 visit to the Centers for Disease Control and Prevention in Atlanta.

The Post says agents questioned the contractor and discovered his criminal history after he refused to stop video recording the president with a phone camera.

Agents didn’t know he was armed until a supervisor fired the contractor on the spot and the man turned over his gun.

The Secret Service did not immediately respond to an email request for comment.

(AP)