The Daily Corinthian reports that Robert Shane Parker entered the plea during a recent term of circuit court before Judge Thomas J. Gardner III. Parker's sentencing is pending.
Authorities say Parker was driving a Jeep Cherokee on an Alcorn County road on April 7, 2011, when the vehicle struck 85-year-old John D. Calvery. Calvery was near the roadside picking up trash. Calvery was pronounced dead a short time later.