While patrolling Pak Chom-Nong Khai road near a shrine in Ban Non Sawan in tambon Huay Pichai of Pak Chom district at about 1am the authorities spotted the two pickups on a roadside.
A group of men were seen moving cloth bags from one vehicle to the other. On being discovered by the authorities, the men fled into the forest.
The authorities found two cloth bags in one of the vehicles and three others in the other. In the bags were 600 bundles containing 1.32 million methamphetamine pills.
Patrol leader Sub Lt Pongsak Sukrom, commander of Rangers Company 2106, said the authorities were acting on information obtained earlier about the drug delivery.
A press conference would be held at the Loei City Halll this afternoon to announce the drug seizure.