Police are investigating a series of incidents including a robbery in Bentley last Monday.
At around 9:20pm on Monday March 18, the 60-year-old male victim was at work at a warehouse in Ewing Street.
He was sitting outside in a car park during a break when he saw two men walk by.
One of the men looked into the warehouse and returned to the second man, handing him a rock.
The second man approached the victim and threw the rock at him from close range, striking him in the head.
He fell to the ground and the man searched the victim's pockets stealing his wallet, phone and cigarettes.
Both men then entered the warehouse and removed a number of items before leaving.
The victim was taken to hospital with a broken jaw and facial swelling as a result of the assault.
About an hour later, a dark coloured Ford Territory filled up at a service station in Thornlie and drove off without paying.
The vehicle had been stolen from Erskine and was found abandoned in Wilson the next morning.
Anyone with information about the identity of the man pictured or details surrounding the offence should contact Crime Stoppers on 1800 333 000 or make an online report.
Picture: WA Police.
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