Mandurah Detectivies have called on the public to help find a man who robbed an Aldgate Street supermarket, about 8pm on Thursday.
While buying a product at the checkout the man leaned over the counter and stole cash from the till.
During the incident, the man grabbed a staff member’s arm causing her to almost fall to the ground.
He then fled the store on a dark coloured BMX push bike.
The man has been described as 20-30 years old, tanned skinned and of medium build, with dark coloured hair which is longer at the back.
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He was wearing a shirt which was red on the top half and black on the bottom, dark pants and grey running shoes.
He also wore black fingerless gloves and a black cap with a grey peak and an unknown word on the front.
The man was also carrying a large white backpack, with some black parts on it.
Anyone with information regarding this incident is asked to call Crime Stoppers on 1800 333 000, or report the information online at www.crimestopperswa.com.au.