Some 100 vehicles had their tyres blown by spikes dispersed on the Bangkok-bound lanes of Phetchkasem Highway in Prachuap Khiri Khan on Saturday night.
Suwiwat Promma, deputy director of the Huay Mongkol Highway Rescue Patrol, said many of the spikes were found in Bangkok. The damaged cars could have plunged into the roadside canal or crashed into trees and killed a lot of people.