Traces of both horse and pig DNA were found in value beefburgers sold in Iceland, Tesco, Aldi, Lidl and Dunnes Stores.

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Traces of both horse and pig DNA were also found in frozen value beefburgers sold by Iceland, Lidl and Aldi and Dunnes.

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The contaminated food - some of which was also found to contain pig DNA - was on sale in Tesco, Iceland, Lidl, Aldi and Dunnes stores.

BBC: burgers