Police said the explosion took place at 1.30pm in tambon Baretoh’s Hutaeyuelor village in Narathiwat’s Bacho district.
The six soldiers were in a pick-up truck transporting sandbags and the insurgents used a remote device to detonate the bomb when the truck neared the bridge.
Meanwhile, a wanted separatist was killed in a clash with members of the No 12 Special Task Force in tambon Jakua of Yala’s Raman district early yesterday morning, police said. The soldiers had surrounded a house at Ban Pulasanor after receiving a tip-off that separatist militants were hiding there.
As they were approaching the house, three armed men ran out and opened fired at the soldiers, who fired back. There was a brief gunfight, before the separatists fled. Soldiers later found the body of Masahudee Samae, 29, at the scene. Police said Masahudee was wanted on several charges.
The soldiers later searched a house nearby and found one of the insurgents, Tameesi Kaba, hiding in the toilet. They also found a bullet-proof vest. Tameesi has been taken to the Jakua police station for questioning.