POLICE are investigating the armed robbery of a service station in South Grafton in the early hours of Sunday morning.
Shortly after 4.30am, police responded to reports the Skinner St business had been robbed by three men.
Officers were told one of the men was armed with a knife and another with sticks.
The men allegedly threatened and assaulted the male cashier before fleeing the premises with cash and cigarettes. They left in the cashier's car.
Emergency services attended where Ambulance Paramedics treated the cashier at the scene for injuries to his face and head.
Police are urging anyone with information about the incident to contact the Grafton station on 6642 0222 or crime Stoppers on 1800 333 000 or click here to use the Crime Stoppers online reporting page.