One man  was killed Sunday evening  about 7:30 when his Malibu ran off Plateau Road and crashed into a tree.  33-year-old Kenath Sylvester of Murfreesboro was airlifted to U.T Medical Center and died shortly thereafter. No information was given as to what may have caused the vehicle to run off the road but high speed is believed to be a factor according to witnesses. Drugs or alcohol was not a contributing factor according the THP report. Sylvester was wearing a seatbelt. (The THP report filed with CNF had mistakenly identified the victim with another name)