Police want to speak to two men, pictured, following an attempted armed robbery at the Gull Service Station on Bussell Highway in the early hours of Monday morning.
At about 2.45am a man walked into the Gull Service Station in Carey Park and approached the counter.
He ordered some food and while it was being prepared he approached the service station staff member and threatened him with a knife, demanding money.
The staff member was able to disarm the offender, who then fled the scene.
The offender is described as male, 183cm tall, with short dark hair and was wearing black track pants, a red top and a black hoodie style jacket.
Police believe the two people pictured below may be able to assist with the investigation and ask them to come forward and make contact.
Police are also searching for information regarding another attempted armed robbery at the Bunbury Regional Entertainment Centre yesterday morning.
At about 1:50am a 39-year-old delivery driver was confronted in the car park at the rear of BREC.
The offender was armed with a knife and demanded money.
The victim challenged the offender, who then fled the scene in a red Holden Commodore.
The offender is described as male, fair skinned and was wearing black clothing and had covered his face.
Anyone with information regarding these incidents, or who recognise either of the men pictured below are asked to contact Crime Stoppers on 1800 333 000.