Police are looking for a man who threatened staff at a pizzeria on Albany Highway in Victoria Park earlier this week.
About 3.30pm, the man entered the cafe, walked behind the counter and threatened a staff member with a knife.
The employee ran and the robber left empty-handed.
The man got into the passenger side of a small white sedan which was then driven away.
The man is described as being in his early 30's, fair skinned and a large solid build.
He was wearing a long sleeve blue hooded jumper and black tracksuit pants.
Anyone with information regarding this incident, or who recognises the person in the photo is asked to call Crime Stoppers on 1800 333 000.