BURLEY — The man who was charged with trying to robbing a West Main Street convenience store with a large kitchen knife admitted to several charges as part of a plea deal.

Quincy D. Arappagis, 20, pleaded guilty to felony aggravated assault, and prosecutors dropped an attempted robbery charge. Prosecutors will recommend he spend one to four years in prison, but suspending the sentence, placing Arappagis on probation.

According to court records, deputies were called to the Mr. Gas store for a robbery in progress, where they found a large kitchen knife on the floor. A clerk who was visibly upset told police Arappagis came into the store waving the knife and demanding that she give him money. She said he was slashing the knife back and forth.

A man at the store said when Arappagis entered said banged the knife on the counter and demanded money. Witnesses also said when Arappagis’s mother arrived at the store Arappagis dropped the knife to the floor he went outside.

His mother told police that he is autistic and “was not in the right state of mind.”

The maximum sentence for aggravated assault is five years in prison and a $5,000 fine. Arappagis will be sentenced April 3 in Cassia County District Court.