A bandanna-masked bandit used a machete to threaten liquor store staff in Mt Lawley last night but he left empty-handed.
Police are asking anyone who saw the attempted armed robbery on William Street around 8.15pm to come forward.
"A man entered the store and threatened staff with a machete, before demanding the contents of the till," the spokeswoman said.
"The attendants refused and the man left the store. He was last seen travelling on foot along Monmouth Street towards Walcott Street."
He is described as being fair-skinned, around 169cm tall, of a medium build. He was wearing a black hooded jumper with a bandanna covering his face.
Anyone who can assist in this investigation is asked to call Crime Stoppers on 1800 333 000.