The son of a former FBI agent who vanished during a trip to Iran said Tuesday that his family feels "left behind" seeing other Americans freed, NBC News reported.
Robert Levinson, 75, was last seen on Kish Island, off Iran's coast, in 2007. And his name was notably absent from the list of Americans released in a complex prisoner exchange with Iran on Saturday.
Don't get me wrong. We're very happy for these families. But we wish we were among them," his son, Daniel Levinson, told MSNBC's Andrea Mitchell in an emotional interview on Tuesday.
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U.S. officials have said they haven't been able to determine Levinson's whereabouts, but have repeatedly brought up his disappearance with Iranian officials. Iran denies any knowledge, and has offered to help search for Levinson.
Levinson was seen in images sent to his family wearing an orange jump suit and chains in 2010 and 2011, but no trace of him has shown up since.