The Queensland government says a 100-thousand dollar reward for information on the strawberry contamination scare is still on offer.
My Ut Trinh has appeared in Brisbane Magistrates court charged with seven counts of contamination of goods with intent to cause economic loss.
The court has heard the woman accused of hiding sewing needles inside strawberries was motivated by spite.
Queensland Premier Annastacia Palaszczuk says investigations are continuing.
Police said there has been 186 reports of needle-contaminated strawberries since September, though 15 turned out to have been hoaxes.
The maximum prison term for contaminating goods in Australia was raised to 15 years as a result of the strawberry scare.
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