Retired FBI Special Agent Robert Levinson vanished in 2007 . He was working as a private investigator . The U.S. `` reiterates its call on the Government of the Islamic Republic of Iran , '' official says . WASHINGTON — A former CIA agent who disappeared while investigating Iran’s
Retired FBI Special Agent Robert Levinson vanished in 2007 . He was working as a private investigator . The U.S. `` reiterates its call on the Government of the Islamic Republic of Iran , '' official says . The FBI is offering $ 1 million for information leading to Levinson 's safe return .