Thailand's influential former prime minister Thaksin Shinawatra is back in prison after the Supreme Court ruled his time in hospital detention was an attempt to avoid jail, a major blow for a powerful family that has dominated politics for two decades.
The polarising billionaire had spent only a few hours in prison upon his return from 15 years of self-exile in August 2023 before he was hospitalised after complaining of heart trouble and chest pains, prompting widespread scepticism and public outrage.
His eight-year sentence for conflicts of interest and abuse of power while premier from 2001 to 2006 was commuted to one year by the king, and Thaksin was released on parole after just six months of detention, the entirety of which he had spent in the VIP wing of a hospital.
On Tuesday, judges said Thaksin had no severe illness and could have been treated in jail, adding both he and his doctors had intentionally prolonged his hospital stay.
"The defendant knew the facts or was aware the situation was not a critical emergency. The defendant only had a chronic condition that could be treated as an outpatient and did not require hospitalisation," they said.
A corrections department vehicle carrying Thaksin was seen arriving at a Bangkok jail less than an hour after a ruling that has gripped the country, the latest drama in two weeks of political chaos that saw the fall of another Thaksin-backed populist government.
The 76-year-old power-broker is experiencing a period of political reckoning after his daughter and protege, Paetongtarn Shinawatra, was sacked as prime minister by a court on 29 August — the sixth premier from or backed by the Shinawatra family to be removed by the judiciary or military.

Former Thai prime minister Paetongtarn Shinawatra was sacked as prime minister by a court last month. Source: AAP / AP / Wason Wanichakorn
Anutin, who was once a member of Thaksin's party and served in two of his cabinets, said he did not want to see him jailed.
"I am saddened, I sympathise with him," Anutin said.
"For someone who has governed the country, I don't want him to face something like this."
Thaksin, who has loomed large over Thai politics throughout a quarter of a century of turmoil, is Thailand's first former premier to be sent to prison.
He accepted the verdict and said he would remain strong.
"Today, I may no longer have freedom, but have freedom of thought to create benefit for the country and people," Thaksin said in a statement on social media.
Thaksin's immediate family attended the verdict with him.
An emotional Paetongtarn said she was concerned about her father, but also proud.
"My dad has created history for the country, including useful policies that benefited the people," she told reporters.
"Today is another historic day where he is the first prime minister to go to jail. This is quite heavy."
Kokaew Pikulthong, a Pheu Thai party MP who was in the courtroom, said Thaksin took the verdict well: "He still has the fighting spirit."
Titipol Phakdeewanich, a political science professor at Ubon Ratchathani University, said that despite the jailing and the Shinawatra family's declining influence, the indomitable Thaksin would still attempt to call the shots in politics.
"Even with the one-year sentence, it doesn't mean that he would completely withdraw from politics. He'll still likely play a role within Pheu Thai," he said.
"I still have doubts that he would spend the whole year in jail, as there are still legal ways to cut his sentence. And we have seen that he did try everything to stay out of jail."