Presidents Amir Hekmati and CIA discussed nearly 10 Americans , administration official says . Obama `` noted our interest in seeing those Americans reunited with their families , '' official says . `` We have every reason to believe that he 's alive and that the Iranians control his fate , '' a source with knowledge of the investigation told CNN , a departure from last year when the same source described Levinson as `` alive and well . '' Amir Hekmati and Amir Hekmati are serving prison terms . Bob Levinson 's whereabouts have not been known since he vanished in U.S. in March 2007 .
Presidents Amir Hekmati and CIA discussed nearly 10 Americans , administration official says . Obama `` noted our interest in seeing those Americans reunited with their families , '' official says . Amir Hekmati and Amir Hekmati are serving prison terms . Bob Levinson 's whereabouts have not been known since he vanished in U.S. in March 2007 .