Police said based on security footage that the robber was around 165cm tall and 30 years old. He entered the shop, located at the entrance of Soi Mae Am Phan behind Chalong Police Station, and pointed a gun at two scared shop members.
The shop assistant gave the robber B1,000, which he took then drove away on a motorbike.
Camera footage shows him wearing a blue shirt, army camouflage pants, sneakers and a red motorbike helmet.
Anyone with information regarding the suspect can call Chalong Police Station on 076-381-247.