Mandurah detectives and the regional investigations unit are investigating an armed robbery at a fast food store in Falcon on Sunday morning.
At about 7.30am, a man entered the store on Old Coast Road wearing a balaclava and armed with a mallet.
The man chased the store attendant out the rear of the store and then stole a sum of cash from the cash register.
The man then left the store.
It is believed he fled the area in a white Toyota RAV4 with no registration plates onto Old Coast Road.
He is described as being approximately 180cm tall, medium build, and tanned skinned.
At the time of the incident he was wearing a black hoodie, blue tee-shirt, black pants and runners.
Detectives are asking anyone with information about the incident to contact Crime Stoppers on 1800 333 000 or report online at crimestopperswa.com.au.
