Police are searching for a man who robbed a petrol station in Edgewater armed with a knife last night.
The man went into the service station on the corner of Joondalup Drive and The Gateway about midnight, threatened staff and stole cash before leaving the store.
No one was injured in the robbery.
The offender is described as about 183cm tall with fair skin. He was wearing green clothes.
Anyone with information is asked to contact Crime Stoppers on 1800 333 000.