Health Minister Greg Hunt has ordered the national food safety watchdog to assess the state's handling of strawberry contamination.

It comes as police investigate claims that needle sabotage has now spread to six brands of strawberries in four states.

Coles and Aldi supermarkets have pulled all strawberries from their shelves across the country, except Western Australia, as a precaution over needle contamination fears.

Berry Obsession, Berry Licious and Donnybrook Berries branded fruit have recalled their strawberries nationwide.

Health Minister Greg Hunt as ordered a review into the strawberry needle sabotage scandal. (AAP)

Police are also investigating contamination of fruit sold by Delightful Strawberries, Love Berries and Oasis in stores in NSW, Queensland, Victoria, and the ACT.

"This is a very vicious crime and it's a general attack on the public, and it's also an attack on a specific industry," he told reporters on Sunday.

Mr Hunt said while it was primarily a problem for the states, he had asked his department to request Food Standards Australia New Zealand make an "immediate appraisal" of the situation.

It comes after the Queensland government announced a $100,000 reward to catch the culprit behind the needle scandal.

In the post Ms Faugeras says her 10-year-old discovered a pin embedded in a strawberry while eating a punnet they had bought from the Coles at Wingham. "We found 3 pins inside 3 strawberries," Ms Faugeras wrote. (Facebook)

Seven confirmed cases of shoppers finding the needles and pins in the fruit have now come to light.

Queensland chief health officer Dr Jeanette Young has advised consumers to take care when consuming the fruit.

"At this stage, please cut them up and just look to make sure they haven't been contaminated," she said.

Police are also calling for anybody who has bought an affected punnet to take it to police for forensic examination.

Shoppers from Redbank Plains and Everton, both in Queensland, and Tweed Heads, on the NSW border, have made the shock discoveries in confirmed cases.

One man was hospitalised , while a mother was also about to feed one to her baby.

Meanwhile, a NSW mother revealed her daughter found sabotaged fruit in a case yet unconfirmed by police.

A NSW mum has posted pictures of needles she said she found in strawberries she was eating with her children. (Facebook)

Chantal Faugeras posted to Facebook images of strawberries she says she bought from a Coles supermarket on the NSW mid-north coast on Tuesday.

In the post Ms Faugeras says the 10-year-old discovered a pin embedded in a strawberry while eating a punnet they had bought from the Coles at Wingham.

"We found 3 pins inside 3 strawberries," Ms Faugeras wrote.

"Please be careful and crush them up before eating or just chuck them out."

She said the punnets were both Delightful Strawberries branded product.

Coles said they had been in contact with Ms Faugeras.

"Coles takes the safety of the food we sell seriously and we are working with our suppliers, police and state health regulators to investigate," a spokesperson said in a statement.

In the post Ms Faugeras says her 10-year-old discovered a pin embedded in a strawberry while eating a punnet they had bought from the Coles at Wingham. "We found 3 pins inside 3 strawberries," Ms Faugeras wrote. (Facebook)

"The safety of our customers is our priority and anyone concerned about their health should seek medical advice."

The Queensland Strawberry Growers Association believes a disgruntled farm worker may be responsible but police say they are investigating all aspects of the strawberry transit process.

It's unclear if Ms Faugeras' discovery is related to the earlier incidents or a potential copycat.

Yesterday, Queensland police announced they were investigating a suspected copycat incident after a metal rod was discovered on top of strawberries inside a plastic punnet at a Coles in Gatton.

Consumers across all three states have been urged to chop up or throw out berries purchased in the past week as police seek a culprit for the sabotage.

The Warmuran farm which supplied the berries under the brand names Berry Obsession and Berry Licious, was inspected by Queensland police and Australian Border Force officers yesterday.

On Thursday Queensland police announced they were investigating a suspected copycat incident after a metal rod was discovered on top of strawberries inside a plastic punnet at a Coles in Gatton. (Facebook)

It's unclear if the Delightful Strawberries brand comes from the same farm or a different region.

NSW Police said: "So far, NSW Police Force has received reports of contaminated strawberries purchased at supermarkets at Tweed Heads, Taree, and Wingham.

"As the products have yet to be forensically examined, it is unknown if the contamination is related to the original Queensland incident or a copycat.

"Police are continuing to liaise with retailers to ensure that all stock from the affected date have been removed from sale."