He stole two mobile phones and a laptop computer before escaping in a white Toyota Hilux ute, being driven by another man. The vehicle was recovered by police several days later in Balga.
The man is described as aged about 20, 175cm tall with a slim build. He wore a scarf covering his face.
His accomplice has tanned skin, medium height, slim build and is aged about 25 to 30. He wore a white coloured cloth covering his face.
PerthNow Digital Edition.
Your local paper, whenever you want it.Get in front of tomorrow's news for FREE
Journalism for the curious Australian across politics, business, culture and opinion.
READ NOWIf you can help police with any information about the two men, call Crime Stoppers on 1800 333 000.