The 50-kilogram bomb was hidden in a gascanister and detonated by a remote control at around midday as an armytruck approached, a local police officer said.
Meanwhile, two Muslim villagers in neighboring Yala province were shot dead on December 10.
More than 5,500 people have been killed as a result of violence in Thailand's Muslim-majority south since 2004.
Security personnel and those connected with the government areregularly targeted, as well as Muslims perceived to be collaboratingwith the authorities.
Earlier this year, the Thai Governmentheld its first official peace talks with southern insurgents but nosignificant breakthroughs were made and attacks have continued in theregion.-VNA