Tests conducted by the Food Safety Authority of Ireland (FSAI) in conjunction with Britain's Food Standards Agency have determined that beef burgers sold by Tesco, Iceland, Lidl, Aldi, and Dunnes Stores across the UK and Ireland contained at least trace amounts of horse DNA.
All contaminated beef burgers were supplied to the supermarkets by three processing plants: Liffey Meats and Silvercrest Foods in Ireland, and Dalepak Hambleton in the UK.
The companies denied knowing about the adulteration of their beef burgers, and vowed to investigate the source. Liffey Meats and Silvercrest have placed the blame on third party suppliers from the mainland.
The FSAI sought to assure consumers that, while unacceptable from a quality standpoint, the horse meat posed no health risk.