Police are appealing for information following the armed robbery of a service station in West Wollongong last night.

About 9pm yesterday (Thursday 15 August 2013), a man wearing a scarf covering his face and armed with a screwdriver entered the service station on Crown Street.

The man threatened a 38-year-old male cashier, demanding he give him cash.

The cashier complied, and the man fled the premises on foot.

Police from Wollongong Local Area Command attended commencing an investigation, a crime scene was established.

The cashier was not injured during the robbery.

The man is described as medium build, approximately 170cm tall and at the time was wearing a black hooded jumper, black pants, white joggers and a black cap.

Detectives would like to speak to any witnesses to the incident that maybe able to assist with their inquiries.