The Irish food safety watchdog says that it has found traces of horse DNA in burger products sold by some of the country's biggest supermarkets, including a burger sold by global retailer Tesco that authorities said was made of roughly 30 percent horse.
The Food Safety Authority of Ireland also said Tuesday that it had found traces of pig DNA in 85 percent of the burger products it tested in Irish supermarkets, including those operated by U.K-based Iceland and German discounter Lidl.
The watchdog says the unusual animal DNA in Ireland's burgers isn't a threat to anyone's health but does "raise some concerns."
U.K.-based Tesco apologized for the horsemeat-heavy burger and said it was pulling Tesco-brand burgers from British and Irish supermarkets as a precaution.
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