A Suspect Who Allegedly Killed Three People, One Being A Greeneville Tennessee Man Has Plead Not Guilty In A Polk County Florida Circuit Court. 35 Year Old Stanley Mossburg Entered The Not Guilty Plea November 18th, His Case Will Now Be Decided By A Jury. Mossburg Is Accused Of Killing Christopher Short Of Greeneville Earlier This Year Officials Believe He Then Killed Two Roommates In Polk County. He Was Arrested In Winter Haven Florida After A Manhunt.