The bomb explosion took place at a village checkpoint on Thursday evening in Khok Pho district in Pattani, Thailand, a predominately Muslims region.
Police Colonel Tanongsak Wansupha, administrator of Pattani police, said that the bomb was planted by guerrillas, however, as with most attacks in the locale, responsibility has not been claimed.
“The culprits placed a bomb under a chair at the checkpoint killing four people,” Police Colonel Tanongsak Wansupha said.
As of yet, no individual or group has claimed responsibility for the attack, yet Bangkok accuses such attacks of the agitator’s dynamic in the viciousness wracked south.
Several insurgent groups are battling the Thai government for more self-sufficiency for the ethnically-Malay area.
Resistance against Buddhist annexation in the region has claimed more than 6,500 lives since 2004 in Yala, Pattani and Narathiwat, all areas circumscribing Malaysia. The violence occasionally spills into the province of Songkhla as well.
Thailand is predominantly Buddhist, but parts of the south, in particular the three southernmost provinces of Pattani, Yala and Narathiwat, are majority Muslim.
In August, a roadside bomb went off in Bacho district in Narathiwat, killing a Thai soldier and injuring four others.
A series of bombings hit Narathiwat and Songkhla in July and executed no less than one individual and harmed over 12 others.
Thailand's military seized power on May 22 and promised to restart a peace dialogue with rebel leaders, launched by government of Yingluck Shinawatra. But months after the junta’s announcement, there has been no changes on the ground.
The region was an independent sultanate until the 19th century and was only formally annexed by Buddhist-majority Siam (Thailand's previous name) under the terms of a 1909 Anglo-Siamese agreement.
In the 1950s, a policy of forced assimilation provoked deep tensions among Muslims, with the situation deteriorating in the 1960s when Thai leader Sarit Thanarat tried to control education in Islamic schools. This decision triggered a rebellion.