The Thailand Royal Police in Chiang Mai have arrested two suspects in connection with a violent assault on a cannabis shop employee that took place on July 31, 2025, in the Mueang district. The attack—carried out by a group of 5-6 men reportedly affiliated with a biker gang—left the male worker hospitalized with severe injuries, including head trauma and internal bleeding. Authorities are actively pursuing the remaining suspects involved in what investigators believe was a premeditated act of violence stemming from a personal dispute.
What This Means for Residents
• Swift Police Action: The Chang Phueak Police Station identified suspects through perimeter CCTV footage within 48 hours, despite perpetrators removing the shop's memory cards to destroy evidence.
• Serious Criminal Charges: The two arrested individuals face felony counts including premeditated assault causing serious bodily harm, nighttime theft, and coercion—charges that carry significant prison terms under Thai law.
• Ongoing Safety Concerns: This marks the second violent crime targeting a cannabis retail location in Chiang Mai within eight months, following a December 2024 armed robbery disguised as a police raid that netted 300,000 baht.
• Legal Uncertainty: Cannabis businesses operate in a regulatory gray zone after the Ministry of Public Health reclassified cannabis flower buds as controlled herbs in June 2025, limiting sales to medical prescription holders only.
The Attack: Forced Humiliation and Brutal Beating
According to witness accounts and police statements, the victim was forced to his knees and made to crawl while prostrating himself before the attackers. The group then kicked and stomped him repeatedly before fleeing. The primary assailant allegedly accused the worker of having a relationship with his wife—a claim that has not been independently verified but which police say motivated the organized assault.
The perpetrators demonstrated clear intent to evade prosecution: after the beating, they physically removed the shop's CCTV storage devices, taking them from the premises. That calculated move failed to prevent identification, however, as investigators from the Chang Phueak Police Station reconstructed the suspects' movements using cameras from neighboring businesses and public infrastructure.
Cannabis Industry Under Pressure
Chiang Mai currently hosts licensed cannabis retailers across its 12 districts. The regulatory environment has undergone significant changes following the Ministry of Public Health's reclassification of cannabis in June 2025. Since that time, only licensed medical practitioners—including doctors, Thai traditional medicine practitioners, dentists, and pharmacists—can legally prescribe cannabis products. Retail shops must now verify prescriptions before completing transactions.
The regulatory shift has left many operators navigating compliance obligations, particularly regarding inventory disposition and staff training requirements. Under current law, violations carry penalties of up to one year imprisonment or fines reaching 20,000 baht, with license suspension or revocation possible for repeat offenders.
Cannabis-Related Incidents
The July 2025 incident is not isolated. In December 2024, four men impersonating police officers and district officials raided a Chiang Mai cannabis shop, binding the owner and employees with rope, covering their heads with burlap sacks, and stealing 300,000 baht in cash, mobile devices, iPads, and four motorcycles. Investigators later determined that one of the shop's own employees had conspired with the robbers, who wanted funds "for New Year's festivities." Police arrested four of the five suspects—identified as Phlakorn, Jirachet (nicknamed Rang), Parichat, and Thitinan—within 48 hours, though one accomplice remains at large.
Several other cannabis-related incidents have been reported in Thailand in 2025 and 2026, including armed robberies and assaults at retail locations in various provinces. These incidents underscore the need for improved workplace safety measures in the cannabis retail sector.
Employer Obligations and Worker Protections
While Thailand lacks specific occupational safety statutes for cannabis retail employees, general labor law provisions apply. The Department of Labour Protection and Welfare (DLPW) has urged employers to establish clear workplace policies regarding cannabis use, particularly for staff operating machinery or vehicles where impairment could cause serious accidents.
Employers retain the right to conduct unannounced alcohol and drug screenings and may refer employees for medical examination if substance use is suspected. In manufacturing or extraction facilities, at least one staff member trained by the Department of Thai Traditional and Alternative Medicine (completing the introductory medical cannabis curriculum) must be on-site during all operating hours to oversee inventory control and safety protocols.
Employers bear legal responsibility for maintaining hazard-free work environments. Exposure to cannabis dust, for instance, has been linked to respiratory conditions including asthma. If an employee is injured due to cannabis-related workplace hazards, the employer may be liable for medical expenses and related costs.
What's Next
The Chang Phueak Police Station continues to coordinate with regional law enforcement to locate the three to four remaining suspects. Investigators have not disclosed whether the primary assailant—the individual allegedly motivated by the personal dispute—is among those already in custody or still at large.
For Chiang Mai's cannabis shop owners, the incident serves as a reminder of the need for improved security measures. Without standardized security protocols or government-issued guidance on employee protection, operators must develop their own safety measures—often relying on CCTV systems that, as this case demonstrates, can be physically compromised by determined attackers.
The regulatory environment adds another layer of uncertainty. With sales now restricted to prescription holders, the cannabis retail sector continues to navigate significant business challenges. As authorities continue their manhunt, the case highlights the importance of workplace security and employee protection in the cannabis retail industry.
