Legal action is being considered against a company whose North Yorkshire factory is at the centre of the scandal over horse meat in beef burgers.
The Food Standards Agency, the UK's food watchdog, is investigating how the meat, which was sold at some of the country's leading supermarkets, became contaminated.
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A 47-year-old woman arrested in connection with the incident in Gomersal on Friday 13 January has now been charged with murder.
Defra has confirmed a case of High Path Avian Influenza on a turkey farm in the Louth area, Lincolnshire.
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