Thai Police Say Pattaya Weapons Cache Linked to Rival Scam Gangs, Not Terror Plot
Thai Police Say Pattaya Weapons Cache Linked to Rival Scam Gangs, Not Terror Plot
BANGKOK, May 13, 2026 — Thai police said a large cache of military-grade weapons seized near Pattaya was likely intended for violent disputes between rival scam syndicates operating across borders rather than for attacks inside Thailand.
The comments came after investigators linked a Chinese national arrested in Chon Buri province to scammer networks allegedly operating in Cambodia, prompting scrutiny of Thailand’s immigration screening and elite visa systems.
Police spokesman Trairong Phiwphan said investigators believed the weapons stockpile was connected to preparations for conflict between competing scam gangs.
“There is no evidence the suspect planned terrorist attacks in Thailand or intended to target Thai citizens,” Trairong told reporters at Royal Thai Police headquarters.
The case centres on 31-year-old Chinese national Mingchen Sun, who was arrested after a rollover vehicle crash in Chon Buri. Subsequent searches uncovered a large arsenal hidden inside a residence near Pattaya, including assault rifles, fragmentation grenades and C4 explosives.
Thai police said forensic and digital investigations uncovered chat records, images of weapons training and evidence suggesting the suspect had been collecting firearms since late last year.
Investigators also traced financial transactions worth tens of millions of baht involving bank accounts and cryptocurrency wallets.
Authorities said Mingchen Sun had entered Thailand legally using both Chinese and Cambodian passports and held a PE visa, or Privilege Entry Visa, designed for wealthy foreign residents.
Police also confirmed the suspect possessed long-term residency status in South Korea and held a pink identification card issued to non-Thai nationals living in Thailand.
The investigation has widened to include allegations that officials accepted bribes to falsify documents used in issuing the identification cards.
So far, six suspects have been implicated, including state officials accused of involvement in illegal firearm sales.
Investigators are continuing efforts to trace the origins of the seized weapons despite attempts to remove serial numbers from several firearms.
Thai authorities said they are coordinating with both Chinese and Cambodian officials as the investigation expands into possible transnational criminal networks.
The case has also raised concerns over Thailand’s vulnerability to exploitation by organised crime groups because of its proximity to regional scam compounds and its role as a major tourism hub.
Police said the suspect remains under close guard after reportedly suffering severe convulsions and shock while in detention. Hospital authorities are conducting toxicology tests, including analysis for cyanide and benzodiazepines, with official results expected within several days.
