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

In the same month, Dunnes Stores announced the loss of more than 60 jobs with the closure of its food section in Foyleside shopping centre in Derry.

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The burgers had been on sale in Tesco and Iceland in the UK and the Republic of Ireland, where they were also on sale in Dunnes Stores, Lidl and Aldi.

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Contaminated burgers had been on sale in Tesco and Iceland in the UK and the Republic of Ireland, where they were also on sale in Dunnes Stores, Lidl and Aldi.

BBC: burgers