A carpenter has been praised after tackling a gunman who allegedly tried to rob a jewellery store in Rockingham.
A 44-year-old man, wearing a motorbike helmet, allegedly smashed display cabinets with a hammer at the store inside the Rockingham Shopping Centre just before 6.30pm on Wednesday.
He also allegedly threatened terrified staff with a gun and demanded jewellery before leaving empty handed.
The man was tackled by John and a number of other men, who held him until police arrived.
"I heard the screaming and saw the motorbike helmet, so I knew what he was doing," John told 9NEWS.
"I don't know, I just got him.
"A couple of other guys jumped on top and made sure he didn't get to his gun."
A 44-year-old Ravenswood man has been charged with aggravated armed robbery, possessing an unlicensed firearm and stealing a motor vehicle.
Mandurah Crab Fest boasts huge range of free, family friendly entertainment
Fuel prices surge in Perth, Mandurah
Teen boys charged over Mandurah burglaries
Tragic update in search for missing man Robert Snyder
Premier Roger Cook to leave Kwinana electorate, move to Perth
Mandurah Marine Rescue's new vessel named in memory of nun who survived 1959 boating accident
Teen dies in motorbike crash at Waroona Dam
Shark alert issued after whale carcass reported at Preston Beach
Kwinana businesses to refuse serving students during school hours