Police manning at a checkpoint on Kaming-Thung Nui road in Kuan Kalong district stopped four pickups for speeding. During their search, they found the vehicles had been modified to conceal the tanks of smuggled oil.
They confiscated a total of 8,600 litres. The suspects were identified as Muhammad Meeka, 47, of Nakhon Si Thammarat province, Sukree Hasoh, 30, Sudaporn Jong, 37, both of Satun, and Somsong Kaewnui, 50, of Yala.
The seized oil has an estimated market value of about Bt2 million. Police said the suspects allegedly planned to sell the smuggled oil in nearby provinces.