A 13-year-old girl has been trampled by shoppers in what has been described as a toilet paper stampede at a Coles supermarket in Perth’s south.

Hayley arrived at the Baldivis store with mum Emma Zache - who is wheelchair-bound following ankle surgery - and brother Tyler about 7.50am on Tuesday to buy toilet paper and other essentials.

As the doors opened, shoppers rushed in and Hayley became separated from her family.

Zache told the Sound Telegraph that once inside she “found my daughter to the side crying”.

“She informed me that she was being pushed by people as the toilet paper was right near the entry and they were trying to get it,” she said.

Chevron Right Icon ‘People were walking over her.’

“She was pushed to the ground and then stood on by adults who had no care in the world for a child on the floor.

“People were walking over her while she was crying on the ground just to get what they wanted.”

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Play Video Hundreds of customers have lined up outside a Sydney Costco store amid unprecedented demand for supplies Hundreds of customers have lined up outside a Sydney Costco store amid unprecedented demand for supplies

The 13-year-old was left with a swollen, throbbing knee and was taken to hospital for scans.

Despite the experience - which Zache described as “utter chaos” - she says the Coles staff has been nothing but supportive.

‘Compassion’

A Coles spokesperson told 7NEWS.com.au that the company “takes the wellbeing of customers and team members seriously”.

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“We are constantly reviewing security measures to manage the unprecedented levels of demand we are seeing in our stores,” she said.

“We ask that customers to continue to show compassion towards fellow customers and team members at this challenging time.”