Burgers containing horse meat could have been made from “diseased or injured animals”, according to environmental health experts.

Health concerns have been raised by the Society of Chief Officers of Environmental Health in Scotland (SOCOEHS) over the safety of beefburgers which have been found to contain horse meat.

The chief of the SOCOEHS said yesterday “there is no way of telling whether the meat is safe” because these burgers have bypassed official inspection.

John Sleith, chairman of the organisation, said: “We note that statements are being made that it is not a health issue, but our concern is that there is no information on how the horse meat came to be in the burgers and so there is no way of telling whether the meat is safe to eat, it could be from diseased or injured animals, for example. If it hasn’t come through the official inspection system, then there is no confidence that it is completely harmless. Investigations are being carried out in the Irish Republic on exactly how these burgers were made.”

Supermarket giant Tesco has placed full-page adverts in a number of national newspapers apologising to customers for selling beefburgers containing horse meat.

The apology came as a reported £300 million was wiped off Tesco’s stock market value.

Aldi, Lidl and Iceland have also withdrawn frozen beefburgers from their shelves after they were found to be contaminated with horse meat.

Sainsbury’s, Asda and the Co-op later withdrew some frozen products but stressed that the move was “purely precautionary” and they had not been found to be selling contaminated food.

Tesco’s apology came as a food expert claimed horse meat could have been in beefburgers for years, but remained undetected because of insufficient food regulation.

The Food Standards Agency (FSA) said it would consider taking legal action against companies at the centre of the scandal.

Meanwhile, the food company at the centre of the scandal yesterday vowed to adopt strict DNA testing of its products to prevent a repeat.

The ABP Food Group, one of Europe’s biggest suppliers and processors, is being investigated by health and agriculture authorities in the UK and Ireland over the controversy.

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