Follow CBSDFW.COM: Facebook | Twitter

SHERMAN (CBSDFW.COM) – A 29-year-old Granbury man has been sentenced to federal prison for drug trafficking.

READ MORE: Suspect In Custody After Child Found Dead In Street In Dallas Neighborhood

John Christopher Esparza pleaded guilty on January 5, to conspiracy to distribute and possession with intent to distribute oxycodone and was sentenced to six years in federal prison by U.S. District Judge Marcia Crone.

According to information presented in court, from November 2012 to September 2015, Esparza was the pharmacist in charge of Trinity Pharmacy in Carrollton.

READ MORE: Police: Missing Tiger In Houston Found Safe, Healthy

Authorities say while there, he illegally sold large quantities of oxycodone to another person.

It was also revealed during the investigation that a review of the pharmacy’s inventory records suggested a large amount of oxycodone with a street value of approximately $2.9 million was unaccounted for.

Esparza was indicted by a federal grand jury on September 10, 2015.

MORE NEWS: DFW Weather: Forecast Has Rain Chances Every Day This Upcoming Week

(©2016 CBS Local Media, a division of CBS Radio Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)