A fourth batch of cheese is to be withdrawn following an outbreak of E Coli that led to the death of a three-year-old child.

Food Standards Scotland (FSS) has issued an alert to local authorities on Saturday to immediately withdraw from sale batch G14 of Lanark White ewe's milk cheese produced by Lanarkshire firm Errington Cheese Ltd.

Errington Cheese has previously issued voluntary recalls for three other batches of their products, all blue cheeses.

They were linked to an outbreak of E Coli in July, which led to the death of a three-year-old girl from Dunbartonshire.

The Crown Office has confirmed it is investigating the death of the child, who was among twenty people across the country who fell ill with the strain of E Coli O157.

Eleven people in total required hospital treatment.

A sample from a batch of Lanark White has tested positive for the same strain and could be a risk to consumers' health, the FSS confirmed.

Consumers may have purchased the product between August 22 and September 10.

Errington Cheese has not voluntarily recalled the product, but under European food regulations the FSS can force the product's withdrawal from the marketplace.

Symptoms caused by E Coli O157 can include diarrhoea, abdominal pain, bloody diarrhoea, and possible kidney failure.

Lanark White is a white cheese made from unpasteurised sheep's milk.

A spokesperson for Food Standards Scotland said: "A sample from a batch of Lanark White submitted for testing by South Lanarkshire Council has tested positive for E Coli O157.

"Although this organism may not carry shiga toxins, it is associated with human disease in the UK, so this cheese is a potential risk to health.

"FSS has issued a FAFA [Food Alert For Action] calling for this product to be immediately recalled from sale.

"This produce is known to be supplied by Errington Cheese Ltd to wholesalers who in turn supply to retail and catering establishments. The product is mainly provided to specialist cheese shops, delicatessens, hotels and restaurants."

The spokesperson added: "FSS advice to vulnerable groups including pregnant women, children and the elderly remains that they should not consume raw, unpasteurised milk and dairy products such as cheese made from unpasteurised milk due to the increased risk of food poisoning.

"FSS is advising all consumers who have purchased this product not to consume them, and to return the product(s) to where they purchased them."