RIVERSIDE (CBSLA.com) — A former Yucca Valley school employee has been sentenced to 23 years in federal prison for his conviction on child pornography charges.

Matthew Frazer, 39, of Yucca Valley, was sentenced Friday by U.S. District Judge Virginia A. Phillip, the U.S. Attorney’s Office stated in a news release.

READ MORE: Staff, Students Evacuated Safely After Reports Of Man With Rifle Prompts Lockdown Of Sylmar High School

Frazer, a former school custodian with the Morongo Unified School District, pleaded guilty in July to one count of distribution of child pornography and one count of possession of child pornography.

In a plea agreement, Frazer admitted filming the molestation of the victim, who was between 4 and 8, from 2008 to 2012, and uploading the films onto the internet to share with others, according to the U.S. Attorney’s Office.

According to court documents, the images have been found in the possession of more than 250 people who collect child pornography.

The case was initiated in 2013 after the National Center for Missing and Exploited Children provided the FBI with a series of pornographic images depicting a 4-6-year-old female being abused by a white male.

READ MORE: Multiple People Injured, Including Officer, During Shooting At High School In Knoxville, TN

For several months, investigators attempted to identify the male depicted in the images. Frazer was identified as the suspect earlier this year.

He was arrested at his place of employment on January 31.

The U.S. Attorney’s Office stated the victim did not attend the schools where Frazer worked.

This case is the result of an investigation by the FBI with assistance provided by the Riverside Police Department, the Riverside County Sheriff’s Department, the San Bernardino Police Department, the San Bernardino County Sheriff’s Department and the San Bernardino County Probation Department.


MORE NEWS: Six Flags Magic Mountain Vaccination Site To Close April 18, Will Be Replaced With Two Additional Sites

Former Yucca Valley School Employee Charged With Child Sex Abuse, Pornography Production