YALA: Three local security volunteers were wounded when a bomb hidden on the roadside exploded in Muang district on Friday morning.
The bomb detonated as four volunteers on two motorcycles were passing a utility pole on a rural road, about two kilometres from Highway 410, which links Muang district with Betong district, about 7.50am.
They were providing security for teachers and students of Ban Katupa School in tambon Bannangsareng of Muang district.
Sathit Rurod, 30, sustained severe wounds to his stomach and Direk Klongpradab 32, suffered injuries to his face. The blast also damaged the eardrum of Tuansulaiman Tuankotae, 30.
They were rushed to Yala Regional Hospital for treatment.
A bomb crater was found close to the pole. Debris included parts of a radio device along with electrical wires and a battery.
Security officials blamed southern insurgents who are active in the area.
They said the bomb was inside a metal box and weighed at least three kilogrammes, and was placed close to the pole.
As the volunteers passed the pole, the bomb was detonated by a radio signal.