A metal object has been discovered in a Queensland banana amid ongoing concern over numerous strawberry brands sabotaged with needles and pulled from supermarket shelves nationwide.

Queensland Police Commissioner Ian Stewart said police had received one report of a metal object in a banana but it is understood the incident was isolated and involved a person placing a metal object in a banana at a shop.

An isolated incident was reported with a metal object found in a banana. Credit:File/Andrew Quilty

"There are significant leads in relation to that [banana] matter," he said.

A 62-year-old woman is assisting Maryborough Police over the alleged incident reported at a supermarket in the town.