Acting on a tip-off, Chiang Rai-based narcotics suppression police spotted a pick-up truck parked at a shophouse on Phaholyothin road in Moo 4 village in Wiang Pha Kham tambon, Mae Sai district at 9.20pm.
Police found Surachai Bese, 27, from Chiang Rai’s Mae Saruay district, hanging around near the pickup.
Police had Surachai open its back cap and found 25 bags with the drug inside.
Surachai was taken to the Chiang Rai narcotics suppression office for questioning. Police are seeking to identify the drug boss who hired him to smuggle the meth through the border.