"Retired FBI agent Robert Levinson <a href=""http://www.cnn.com/2014/01/21/us/iran-levinson-family-speaks/index.html"">has been missing since 2007.</a> His family says he was working as a private investigator in Iran when he disappeared, and multiple reports suggest Levinson may have been working for the CIA. His family told CNN that they have long known that Levinson worked for the CIA, and they said it's time for the government to lay out the facts about Levinson's case. U.S. officials have consistently denied publicly that Levinson was working for the government, but they have repeatedly insisted that finding him and bringing him home is a ""top"" priority. <a href=""http://www.cnn.com/2015/03/09/middleeast/us-robert-levinson/index.html"" target=""_blank"">The FBI increased its reward</a> for information on Levinson from $1 million to $5 million."