(KAIR)--Guilty. That's the plea entered Friday by an Atchison man arrested last month after authorities say illegal sexual images were found on computer equipment he owned. 

54-year-old Jason Charlsen appeared in Atchison County District Court Friday, where he waived his right to a preliminary hearing and entered the plea. 

Sentencing is set for the morning of March 25th. 

He was arrested following an investigation launched late last year after the images of children were found on a flash drive he owned. 

Sheriff Jack Laurie, at the time of Charlsen's arrest, said the flash drive had been used on a computer he didn't own, and that's how the images were brought to the attention of authorities. 

An investigation was launched and that led to the execution of search warrants that led to the seizure of additional digital storage devices that investigators say contained more sexually explicit images of young girls, some believed to be as young as 6-years-old. 

Charlsen remains jailed in Atchison County on a bond of $100,000.