
Thailand’s Supreme Court has rejected appeals by four defendants in a drug-trafficking and money-laundering case involving 5.2 million methamphetamine pills, leaving death sentences against all five defendants in place.
The ruling was read at the Criminal Court on Ratchadaphisek Road in Bangkok on Monday (September 7, 2026). The case concerned the financial operations of a drug network along the Thailand–Myanmar–Laos border.
The defendants were identified as Piyachat, Krittipong, Amphon, Somboon and Korakot, with their surnames withheld. All five denied the charges during the trial.
The trial court convicted all five and sentenced them to death, a decision upheld by the Court of Appeal’s Narcotics Division. Krittipong, Amphon, Somboon and Korakot subsequently received permission to appeal to the Supreme Court. No party appealed the judgment concerning Piyachat, leaving her death sentence final.
Narcotics prosecutors charged the five with conspiring to commit drug offences, supporting or assisting drug offenders, conspiring to launder money and jointly laundering money.
The prosecution described an operation in which the defendants divided responsibility for procuring and transporting drugs. Piyachat received and stored the drugs before delivering them to buyers, while Krittipong and Amphon followed her instructions and handled financial transactions.
Somboon and Korakot supported the operation by using drug-sale proceeds to conduct car-trading activities in Myanmar. Prosecutors said this converted assets linked to the offences into another form to conceal their origins.
In reviewing the appeals, the Supreme Court found sufficient weight in the prosecution evidence to establish that Krittipong and Amphon had conspired with Piyachat to commit drug offences.
It found Somboon guilty of money laundering and established that Korakot had opened a bank account to receive drug proceeds transferred by Piyachat. The court described a major trafficking operation that sought to conceal its financial trail and the origins of its criminal assets.
The case followed a Narcotics Suppression Bureau operation in 2019 targeting the network’s financial activities. Police arrested the suspects at an upmarket housing estate in Bangkok’s Ratchada–Ram Inthra area and seized assets valued at approximately 100 million baht.
The seizures included four houses with land worth about 76 million baht and two condominiums valued at approximately 3.3 million baht.
Police also seized three cars—a Toyota Alphard, a Porsche Panamera and a Mercedes-Benz 220D—and four motorcycles with a reported value of about 2.2 million baht. Harley-Davidson motorcycles were among the vehicles listed. Other assets were valued at approximately 5 million baht.
The Supreme Court’s Narcotics Division accepted as established fact that, in February 2014, a fugitive suspect who had not been brought to trial alongside the five defendants possessed 5.2 million methamphetamine pills, classified as Category 1 narcotics, with intent to distribute them.
The court found that the five defendants had conspired with that suspect to possess the drugs for distribution. It rejected the arguments advanced by the four appellants and agreed with the Court of Appeal’s findings.
The judges said that allowing such a large quantity of drugs to reach communities would fuel crime and cause widespread economic, social and public-health harm. They considered the operation a serious threat to state security.
The court held that the conduct constituted a single act violating several legal provisions. It applied the provision carrying the most severe penalty—jointly distributing methamphetamine in a manner affecting state security—and upheld the death sentences.