Police are investigating the circumstances surrounding an armed robbery at a service station in Colyton overnight.
About 10.45pm last night, two men entered a service station on The Great Western Highway and produced a firearm.
They threatened a male employee and demanded cash from the register and cigarettes.
The employee handed an amount of cash and a small amount of cigarettes before the pair ran from the store.
Police were called and a crime scene was established while specialist police conduct further inquiries.
Anyone who may be able to assist detectives with information concerning this robbery should call St Marys detectives.
Police are urging anyone with information in relation to this incident to call Crime Stoppers on 1800 333 000.