According to Pol Lt Anukul Chaisuwan, the duty officer at the Sungai Padi police station, the incident occurred before noon on the Sungai Padi-Sako road at Ban Juerae in tambon Riko.
Witnesses said that while Kamani Mama, 56, a defence volunteer in tambon Kawa, was travelling on a motorcycle to the municipality of tambon Paluru he was followed by two men on another motorcycle. The pillion rider opened fire at him with a 9mm pistol.
Kamani was hit four times in the body. He was killed instantly.
Police were investigating.