(KAIR)--Nearly 3 years in prison. 

That's the sentence handed down for an Atchison man arrested in January for  possessing numerous sexually explicit images of young girls. 

Jason Charlsen learned his fate Friday following an appearance in Atchison County District Court. 

Along with the prison sentence, he was ordered to a lifetime of post-release supervision and must pay attorney's fees, court costs, and other related fees. 

Charlsen, 54-years-old at the time of his arrest, entered a guilty plea to one count of sexual exploitation of a child in February. 

At the time of his arrest, Atchison County Sheriff Jack Laurie told MSC news the images were found on a flash drive used on a computer that didn't belong to Charlsen. 

That sparked the investigation, which led to the seizure of additional computer equipment he owned, and to the discovery of more images, including those of girls that authorities say were less than 6-years-old.