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09/13/2010 11:23 am ET Updated May 25, 2011

Bike Thief Advises How To Prevent Your Bicycle From Being Stolen

Omar Aziz started stealing bikes when he was 17 and carried on until he finally weaned himself off crack cocaine at the age of 29. Now he wants to make amends. He is volunteering in his local area and he agreed to advise Guardian readers how not to get their bikes stolen.

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