The supplier of a supermarket bolognese sauce, which was taken off the shelves last week because it contained horse DNA, has re-started full production at its Bristol base after a "deep-clean" over the weekend.
Greencore, which makes convenience foods for supermarkets, has said all other products from the factory have tested negative.
The company has launched a full investigation into how the ASDA sauce contained nearly 5 per cent horse DNA.
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Searches are being carried out in Nunney in Somerset for 86-year-old Kenneth Scotcher.