A Hamblen County Tennessee Jury Has Found A Greene County Man Guilty Of Felony First Degree Murder And Other Charges In The 2014 Beating Death Of 69 Year Old Donald Gunter. Mario Keene Was Also Convicted Of Especially Aggravated Burglary, Especially Aggravated Kidnapping, Robbery, And Theft. Amanda Harris, Who Plead Guilty To Second Degree Murder In Connection With The Incident, Is Serving A 25 Year Prison Term. She Testified Against Keene On Wednesday. Prosecutors Said The Two Were Looking For Money To Buy Drugs When Keene Allegedly Hog-Tied And Beat Gunter To Death. Sentencing For Keene Is Set For October 21st.