A registered sex offender is back behind bars in Parker County.
William Raymond Catron wrapped up a periodic compliance check when a visitor to the Parker County Sheriff's Office found a thumb drive in the parking lot.
That drive was determined to belong to Catron when surveillance showed it falling out of his pocket according to the Parker County Sheriff's Office.
The Sheriff's office says the drive contained thousands of images of child pornography as well as several videos.
Catron was told to return to the office where he was arrested and charged with first-degree felony possession of child pornography.