ACT Policing is seeking  witnesses to an aggravated robbery at a service station in Kambah where a knife  was produced.

About 10.30pm on Friday, May  25, a man entered the Caltex Service Station on O’Halloran Circuit, carrying a  large cleaver style knife and demanding cash from the console operator.

The operator complied with the  demands and the man was last seen heading across Jenke Circuit towards the ACT  Remote Control Car Club, with a small sum of cash.

The offender is described as aged between 20 and 30 years old, approximately 183cm tall,  large/athletic build, dark tanned complexion, possibly Islander in appearance.  He was wearing a black hooded jumper, black tracksuit pants, a black beanie and  white gloves with a white T-shirt wrapped around his face, and  carrying a black bag.

Police are appealing for the driver of a white or  silver hatchback, possibly a Holden Barina, which left the service station a  couple of minutes before the robbery to contact them as they may be able to  assist with the investigation.