A local man caught with thousands of child porn images on his computer has been sentenced to four years in prison.The man, Charles Ray Wilson entered a guilty plea before Circuit Court Judge Bart Stanley to the charge of sexual exploitation of a minor. He was given a four-year penitentiary sentence and must undergo sexual offender treatment and register himself with the state’s sexual predator tracking site.Investigators say they found numerous pieces of child pornography on his computer after they arrived at his home acting on a tip from the Cyber Crimes Unit which monitors questionable Internet posts.Local investigators were advised the posts had been made through Wilson’s Tumbler account. Tumbler is a photo and information sharing web-site.