Australians have been warned to cut open fresh strawberries before biting into them after multiple customers reported finding sewing needles hidden inside.
One man was taken to hospital after eating a strawberry with a needle inside.
Six brands of strawberries are now believed to be affected by needle and pin contamination according to police, including Donnybrook Berries, Love Berry, Delightful Strawberries, Oasis brands, Berry Obsession and Berry Licious.
Initially three incidents in Queensland had been reported to police on Thursday.
Queensland Premier Annastacia Palaszczuk told media on Saturday investigators were doing "everything they possibly can" to find those responsible for the tampering, and pleaded with the public to come forward if they knew any information.
NSW Police said in a statement late Friday that it is unknown if the contamination is related to the original Queensland incident or a copycat as the products have yet to be forensically examined.
On Thursday, Queensland police announced they were also investigating a suspected copycat incident after a metal rod was discovered on top of strawberries inside a plastic punnet at Coles in Gatton. "These further instances are cases in which needles have been found within the strawberries and people have gone to eat them, have cut them up and found the needles".
She said the punnets were both Delightful Strawberries-branded products.
Police believe it may be the work of a former employee.
(From left) Queensland chief health officer Jeanette Young and Acting Chief Superintendent of state crime command Terry Lawrence address the media regarding the strawberry contamination.
"Police are continuing to liaise with retailers to ensure that all stock from the affected date has been removed from sale".
Health officials have urged people purchasing the fruit to be cautious.