On 6 September 2016, the Supreme Court of Thailand ruled that he must serve the 20 years in prison sentence ruled by the Appeals Court in 2012, when he was freed on bail. The sentence, according to the Supreme Court, will not be suspended. He was found guilty of violating the Securities and Exchange Act by falsifying documents in 1997 to secure a loan from Krung Thai Bank amounting to 1.08 billion baht. He was released from jail early on 4 September 2019 on royal pardon.