Last Updated on October 8, 2026 by Jeff Tomas
CHIANG MAI – Cyber police in Thailand raided a residential home in Chiang Mai on October 7, targeting the San Sai district. Officers acted on a search warrant from the local provincial court after spotting illegal weapons for sale online.
To catch the suspect, authorities set up a clever undercover sting operation by purchasing a weapon from a Facebook page. The seller operated under a fake profile name and sold directly to private group members.
When the police team arrived at the property, three dogs guarded the garden area, including a fierce Thai Ridgeback. The quick-thinking officers used dog food to safely calm the animals before stepping onto the property.
Behind the main house, they discovered a hidden warehouse used for producing illegal firearms. Police quickly arrested a 50-year-old man named Mr. Duangjan right inside his backyard factory.
Key Takeaways
- Police safely bypassed guard dogs to raid an illegal weapon factory in Chiang Mai.
- A 50-year-old man used basic online shopping apps to buy parts and build air guns.
- The suspect earned up to 50,000 baht a month selling homemade guns on Facebook.
Social Media Sales and Seized Weapons
The suspect sold his dangerous products in a private Facebook group containing more than 2,200 active members. Inside the warehouse, officers seized four high-pressure air guns, aiming scopes, lead pellets, and 17 rounds of .22 bullets.
The man openly admitted he ordered the metal parts from popular shopping apps like Shopee and Lazada. He then assembled the parts in his home workshop to create functioning, high-powered weapons without any legal permits.
Mr. Duangjan confessed to having 15 years of experience building weapons despite only having a basic high school education. He priced each homemade air gun between 9,500 and 11,500 baht, earning a solid monthly income of up to 50,000 baht. The suspect is now safely in police custody and will face strict legal action for his illegal business.
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