A Request From A Greeneville Man For A New Trial Is In The Murder Of A Man Nearly Four Years Ago Has Been Denied By The Tennessee Court Of Criminal Appeals. Mario Keene Was Convicted In September 2016 In The Death Of Donald Ray Gunter On Old Mountain Road In 2014. He Was Found Guilty On Four Counts Of First Degree Murder, Especially Aggravated Kidnapping, Robbery And Theft. He’s Currently Serving A Life Sentence. The Court Of Criminal Appeals Rejected The Prosecutorial Misconduct Argument.