Two power poles on the Narathiwat-Pattani highway at Ban Blukasanor in tambon Tapoyoh of Yingor were brought down by explosives late on Tuesday night, Yingor police chief Pol Col Suthon Sukviseth said on Wednesday.
Pol Col Suthon said it appeared a five-kilogramme improvised bomb was attached to each power pole and then detonated by mobile phones.
He blamed separatist militants.
He said no one was hurt because the militants aimed only at destroying the investment climate in the southernmost province.
Inspection of the damaged poles. Photo by Waedao Harai.