Three people have found metal objects in potatoes in Nova Scotia and P.E.I. this month in possible food-tampering cases, RCMP warned on Thursday.

On Monday, P.E.I. RCMP began investigating after a person found a metal object in a potato bought at the Montague Atlantic Superstore. Police didn't identify the food's brand.

On Tuesday, a man found a nail in his potato in Antigonish, N.S., and took it to police. Police say the Farmer's Market potatoes came from the Atlantic Superstore in late April or early May.

On Wednesday, RCMP learned of another nail in a potato bought at a No Frills grocery store in Barrington Passage. It was also a Farmer's Market potato.

No one was hurt in any of the incidents.

Police asked anyone who found anything similar to keep the potato, metal object and the bag, and to call police.

People found tampered-with potatoes last fall, too.