A thief who stole a woman's purse at a shopping centre in Perth in western Australia ran though a pane of glass as he tried to get away.
CCTV footage shows the man sprinting down a corridor towards the exit after grabbing the purse.
However, he misjudged the door and ran straight through it, smashing the glass and knocking himself out.
Not realising he was a bag-snatcher, bystanders ran over to help the stricken man.
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An accomplice then ran up and tried to dragged his hapless friend into a waiting car.
The owner of a local tattoo shop tried to hold the bag thief, but was forced to let him go when he was threatened with a gun.
The dazed thief staggered into the stolen car, which then sped off.
Police have yet to make any arrests.