Koya Kamae, 52 of Ban Pula village, died at the scene while Sama-ae Karao, 52, the victim’s assistant, was injured, according to Pol Col Tuande Chutanant, chief of Yarang police station.
The attack took place as the men were returning to their homes after the monthly meeting at the Yarang district office.
As Koya drove, unidentified assailants in another pickup followed them and drew alongside the headman’s vehicle.
The gunman, in the back of the pickup truck, shot them with an AK47 assault rifle.