Jeremy Charles Posten, 32, made the plea before Walker County Circuit Judge Jerry Selman.
The robbery took place Aug. 6, 2010, at the Star Food Mart Texaco, located at 1275 Highway 78 West near Cobb Movies 4.
Walker County District Attorney Bill Adair said Posten entered the business, put a knife to the throat of the store clerk and demanded money. Adair said Posten got $500 from the cash register and fled on foot.
Adair said Posten was identified by the clerk, as well as a witness who saw him flee the store.
He was located and arrested by members of the Jasper Police Department.
“This is such a violent act, to put a knife to someone’s neck,” Adair said. “My office has made a point to give these types of violent robberies priority. We’ve consulted with store owners and clerks, many of whom have been victims in these types of crimes in the past. I’ve told them personally that we are not going to go easy on the people who commit these crimes.”