“When Robert Levinson was first kidnapped in Iran seven years ago, the CIA asserted that he had no ties to the agency, that he was merely a private citizen on a business trip. A leaked internal CIA paper trail showed otherwise. In 2010, the Associated Press learned that Levinson was, in fact, on a CIA mission when captured”
http://www.counterpunch.org/2013/12/13/the-revelations-of-kidnapped-cia-agent-robert-levinson/