Iranian scientist Shahram Amiri speaks with journalists as he arrives at the Imam Khomini airport in Tehran in this July 15, 2010 file photo. REUTERS/Raheb Homavandi

Iranian scientist Shahram Amiri speaks with journalists as he arrives at the Imam Khomini airport in Tehran in this July 15, 2010 file photo. REUTERS/Raheb Homavandi

Iranian scientist Shahram Amiri speaks with journalists as he arrives at the Imam Khomini airport in Tehran in this July 15, 2010 file photo. REUTERS/Raheb Homavandi

August 7, 2016 12:22 PM (UTC+8)