Thai authorities are probing the discovery of a massive illegal arsenal found in the possession of a Chinese national, a case that has since exposed a troubling chain of custody involving police-issued firearms.
The investigation centers on a suspect identified as Ming Chen Sun, whose home was searched after police uncovered war-grade weaponry. The discovery was made unexpectedly when a routine investigation into a car accident led officers to realize the suspect was harboring a significant cache of arms.
A primary focus of the probe is the origin of several weapons that were originally issued to the Royal Thai Police. According to a detailed timeline, at least one firearm assigned to the Sai Mai police station changed hands four times before ending up with Sun. Investigators found that the weapon had been pawned multiple times, with the final person to possess the gun before selling it to the suspect being a police officer with the rank of Deputy Inspector who had a prior history of disciplinary investigations.
Despite the severity of the weapons found, the National Police Chief has clarified that there is no evidence suggesting the suspect is involved in terrorism. Officials stated that Sun appears to be a gun collector, though the legality of his acquisitions remains the central point of the criminal case. The Police Chief has ordered a full investigation into how official service weapons were leaked into the black market.
On May 9, 2026, Pol. Lt. Gen. Trairong Phiwphan, spokesperson for the Royal Thai Police, provided updates on the investigation during a briefing at the Na Jomtien Police Station in Chonburi. He noted that the suspect possesses a “complex” identity, which authorities are currently working to verify. Police are also aggressively tracing financial trails to determine the full source of the weaponry and identify any other accomplices.
The case highlights significant lapses in the internal tracking and accountability of government-issued firearms, raising questions about how service weapons can be pawned and sold multiple times without immediate detection by the department.
Further details regarding the total number of weapons recovered and the specific charges against the involved officers are expected as the financial investigation continues, as reported by official police updates and departmental statements.
