Police are searching for a man they believe is responsible for robberies at a McDonalds store in North Perth and a Bankwest branch in the CBD.
Just before 8pm on Wednesday February 20, a man went into McDonalds on Charles Street with a syringe and threatened staff.
He was given cash before running out of the store.
About 1.45pm on Friday February 22, a man armed with a knife went into Bankwest on Murray Street and threatened a teller.
He was again given cash and ran from the bank.
The offender is described as aged in his late 20s to early 30s and about 180cms tall with a medium build, fair skin and short scruffy orange facial hair.
He was wearing a black T-shirt, blue jeans and a grey baseball cap.
Anyone who recognises the person in the photo or has any other information about the robberies is asked to call Crime Stoppers on 1800 333 000.