"Immediately in front of the stage, an unidentified individual shouted 'gun.' Secret Service agents and Reno Police Officers immediately apprehended the subject. Upon a thorough search of the subject and the surrounding area, no weapon was found," the Secret Service said in a statement.
"A thorough investigation is ongoing at this time by the U.S. Secret Service and the Reno Police Department," it said. (Reporting By Steve Holland; Editing by Simon Cameron-Moore)