A Sheridan man is admitting that he robbed a Casper pharmacy.

Twenty-eight year old Derek Wood has pleaded guilty to one charge of robbery.

Casper Police say in November, Wood approached the pharmacy at the Albertson’s Grocery Store on East Second Street, and asked for some prescription drugs.

Employees told investigators that they saw what they believed to be a gun, and gave him the prescription.

They suspected it was Wood, because he had frequented the pharmacy for other prescriptions.

Wood was spotted in the grocery store one week later and when questioned by police, he admitted to the incident, and said he used an airsoft handgun at the time.

As part of a plea deal, prosecutors will seek no more than a five-to-seven year prison sentence, which will be handed down at a later date.