It is suspected that 12 tonnes of turkey butterflies, processed by Severnside Provisions Ltd at premises in Newport, South Wales were supplied to independent butchers and catering outlets throughout South and Mid Wales, South West and south-central England.
Eight tonnes have so far been retained and prevented from entering the food chain after action by Newport City Council.
There is no evidence at present of any specific risk to public health from consuming this product. However, it is illegal to supply meat from unapproved premises.
More top news
A woman in Thailand killed herself by jumping into a pond of crocodiles at a popular tourist attraction, Thai police said.
A bizarre Taiwanese report on shows CGI versions of Alex Salmond, Alistair Darling and the Queen explaining the Scottish referendum.
Actor Gerard Depardieu claims he shot two lions on holiday in Africa and that he can drink up to 14 bottles of wine a day.