Bennett on Wednesday night had attended a banquet as part of his rookie honor. The other deputy sharing rookie of the year honors is Jennifer Burkhalter.
Sheriff J.B. Smith said alcohol was not believed to be a factor in the accident.
Department of Public Safety trooper Jean Dark said Bennett apparently fell asleep at the wheel around 5 a.m. Thursday. The vehicle hit a stone wall.
“From the witnesses it sounds like he just went to sleep and lost control of his vehicle,” Dark told the Tyler Morning Telegraph.
Bennett had spent the night, after the banquet, with a relative and was believed to be driving to his own home when the accident happened.