Rda Group employee Antywan Ross conned a New Jersey investor into paying him a $330,000 (Gbp206,250) loan, which he said would be used to plan a series of concerts for the Hero hitmaker in Dubai, United Arab Emirates.
However, when Carey's proposed gigs never took place, and the businessman was never paid back, he launched a legal battle against Ross for the scam.
On Monday (06Jun11) a judge ordered Ross to serve 21 months behind bars and pay $325,000 (Gbp203,125) in restitution.
Ross pleaded guilty to wire fraud last year (10), according to the Associated Press.