Highway police in Nakhon Ratchasima intercepted an attempt to smuggle 500 kilograms of crystal meth, also known as "ice," worth around 300 million baht late on Sunday night.
Senior officers from the third highway station of Subdivision 3 of the Highway Police Division announced the seizure of the drug, which was found in 12 sacks, on Monday after the police intercepted the shipment on Motorway 6.
Pol Lt Col Parin Khotmanee, chief of the station, said officers had received a tip-off from an informant about traffickers planning to smuggle the drug using a grey four-door pickup truck to Nakhon Ratchasima.
The station then deployed officers to stake out a spot on the motorway.
When officers spotted the suspicious pickup, they emerged from their hiding spots and signalled for the vehicle to stop.
Parin said the driver of the pickup became frightened, parked the vehicle on the roadside, and fled on foot into the dark.
Upon checking the pickup, police found the drugs. They also discovered two license plates, which they suspected to be fake.
The pickup was towed to the highway police station in Si Khiew district, where police held a press conference to announce the haul.