Corrections Department Director General Witthaya Suriyawong said Chonsawat was admitted to the hospital after his heart disease worsened, causing him to have a severe pain in the chest.
Chonsawat, former president of the Samut Prakan Provincial Administrative Organisation, has been serving his term for six months after the Supreme Court sentenced him to one year and six months for cheating the Mueang Samut Prakan Municipality election.