Tesco finds horse meat in some Everyday Value Spaghetti Bolognese

It carried out a number of tests following the product's withdrawal from sale on a precautionary basis. Tesco says that of the positive results, most are at a trace level of less than 1% but three showed significant levels of horse DNA, exceeding 60%. The company also tested the horse meat for 'bute' and the results were negative.

Source: FSA