The victim was identified as Mayi Ahtae, a 64-year-old subdistrict administration organisation member of Mayung subdistrict.
The attack occurred late Sunday morning when Mr Mayi was travelling in his sedan, returning from a market in Si Sakhon district to his home.
While the victim was driving on Rueso- Si Sakhon Road, a group of men in a black pickup truck without a licence plate approached the victims’s vehicle.
Then men in the back of the pickup truck armed with AK-47 assault rifles opened fire at Mr Mayi’s car and stole his 9mm pistol before speeding off. He died on the spot, according to Pol Col Payong Sanukul of Si Sakhon police station.
An initial investigation found that the sedan was riddled with several AK-47 bullet holes, before hitting a roadside lamp post.
Police presume that the attack was carried out by a group of insurgents.