FILE - This undated file photo released by his family via FreeAmir.org shows former U.S. Marine Amir Hekmati, who is being held in a prison in Iran on accusations of spying for the CIA.

 

              FILE - This undated file photo released by his family via FreeAmir.org shows former U.S. Marine Amir Hekmati, who is being held in a prison in Iran on accusations of spying for the CIA.
FILE - This undated file photo released by his family via FreeAmir.org shows former U.S. Marine Amir Hekmati, who is being held in a prison in Iran on accusations of spying for the CIA. Hekmati's sister, Sarah Hekmati, says her family sent a letter Tuesday, March 5, 2013 to Supreme Leader Ayatollah Ali Khamenei calling for the release of her brother. Iran's Supreme Court ordered a retrial for him last March, and he's been detained for 555 days. (AP Photo/Hekmati family via FreeAmir.org, File)