Salmonella has been detected in a batch of chocolate treats on sale in some Aldi stores.
Customers of the discount chain who bought 200g packs of Choceur Treasures with a best before date of September 1 2015 have been asked to return the items and warned not to eat them by food safety officials.
The products, which consist of hazelnut wrapped in waffle and milk chocolate, were only on sale in Aldi stores in the Midlands.
The Food Standards Agency (FSA) announced the product recall, saying: "If you have bought the above product, do not eat it. Instead, return the product to the nearest store."
The FSA said no other Choceur or Aldi products are affected.
Salmonella, which is normally caused by eating contaminated food, can cause food poisoning with symptoms including diarrhoea, stomach cramps and sometimes vomiting and fever.
It typically takes between 12 and 72 hours for the symptoms to develop, and they last for four to seven days, with most people recovering without treatment.
Chocolate giant Cadbury was fined £1 million after a salmonella outbreak in which a total of 42 people fell ill in 2006.
An Aldi spokesman said: "Aldi has recalled 200g packs of Choceur Treasures with a best before date of 1st September 2015 because salmonella was detected in one batch of the product on sale in Aldi stores in the Midlands region only.
"If any of our shoppers have bought this product, we ask them to check the best before date and do not eat it if the packaging states that the best before date is 1st September 2015. Instead, return the product to the nearest store and you will receive a full refund or exchange.
"Please be assured that that the safety of our shoppers is our number one priority and this was an isolated incident."
The FSA said further investigations into the source of contamination are being carried out in Germany.
The salmonella detected has been identified as coming from the E1 group.
Aldi, which has stores in Chesterfield, Alfreton and in Buxton has tested other products from the same manufacturer and found all tested negative for Salmonella, the FSA said.
It also disclosed that 2,400 boxes were distributed to Aldi stores in the Midlands.
A spokesman for the supermarket was unable to say how many of the products in question, which cost £1.99, were sold.
A list of the Aldi branches where Choceur Treasures have been sold published by the FSA contains a total of almost 100.