
The 28-year-old identified only as U was arrested at a temporary checkpoint in the village of Ban Huayphueng in Tambon Huaypha, arriving on foot and carrying a backpack.
Officials believed he was behaving suspiciously and searched his bag, which allegedly contained the drugs.
U purportedly confessed to carrying the drugs from Panglong in Shan state to sell to a Thai man in Chiang Mai he knew only as Ead.