This is the first locally transmitted Covid-19 case in Thailand in over 100 days.
Dr Suwanchai Wattanayingcharoenchai, DDC director general, said the prisoner was recently shifted to the Central Special Correctional Institution in Bangkok.
The man lived in a condo in Bangkok’s Bang Mod area and worked as a DJ in Rama III and Rama V areas before being caught.
The prisoner has been sent to hospital, while the 34 prisoners who were in the same cell are being quarantined.
Medical officials have learned that the man had come in contact with five relatives, two of whom are living upcountry.