A man with a machete allegedly robbed a truck driver last Friday morning when his B-double broke down on the Eyre Highway at Coorabie.
Police were called to the highway just before 2:30am, where the driver alleges a man knocked on the truck’s window, presented a machete and threatened him before stealing cash and the keys to the truck.
The man drove off in a dark coloured beat-up Holden sedan without registration plates, last seen heading north-west on the Eyre Highway.
The suspect is described as being about 180cm tall with a strong build, wearing a balaclava and a hat.
The driver was not physically injured as a result of the incident.
Anyone with information or dashcam footage that may assist with the investigation is asked to contact crime stoppers.