FIRST Australians found needles planted inside packets of strawberries.

Then a woman was bust sticking a needle into a banana for sale as well.

Worst of all, the investigation cops have launched is massive and complex and yet to yield any clues.

So far, 10 needles have been found inserted into strawberries and one in a banana, the Guardian reports.

Needle-infested strawberries have been found in Queensland, Western Australia and Tasmania.

A 62-year-old woman was bust putting a needle in a banana in Queensland, but apparently she’s got mental health issues and was doing a copycat act.

Around the country and even in New Zealand, nervous shop owners are removing strawberries for sale from their shelves.

Vice president of the Queensland Strawberry Growers Association, Adrian Schultz, is describing the the problem as an “act of commercial terrorism” that is threatening to bring the fruit industry to its knees.

“I’m angry for all the associated people, it’s the farmers, the people who supply them, the packaging people, the truckies with families to support, who suddenly lose their jobs ... it’s far-reaching,” he told ABC radio today.

There are around 150 commercial strawberry growers in Queensland.