Rat poison has been found in a jar of HiPP baby food, police in Austria have said, after a recall of the product from more than 1,000 Spar supermarkets in the country over safety fears.

Police in Burgenland said in a statement that a sample from one of the 190g (7oz) jars of carrots and potatoes baby food reported by a customer had tested positive for rat poison.

HiPP had said on Saturday it could not be ruled out that a dangerous substance had been introduced into the product, and that its carrots and potatoes jars may have been tampered with.

The police statement said the affected jars had a sticker with a red circle on the bottom of the jar and a lid that had already been opened or damaged or missing a safety seal, or had an unusual smell.