Suspect Natthapol Yoy-at was wanted for smuggling prohibited items, including mobile phones, into prison under a warrant issued in January 2016.
Natthapol of Pak Payoon reportedly confessed to police that he had performed the service many times before he was finally arrested at a house in Pa Bon on Thursday.
Besides charging a Bt4,000-Bt5,000 service fee, Natthapol also allegedly charged inmates Bt60,000-Bt70,000 for eac