Horse meat has been found in lasagna in the U.K. just weeks after it was also discovered in burger meat sold at British supermarkets.
Horse meat constituted 60 to even 100 percent of the meat found in the Findus Lasagna tested by the Food Standards Agency (FSA), according to the Daily Mail.
The lasagna packs were made by a French company, Comigel, at a plant in Metz. Comigel also makes beef products for Tesco and Aldi. Findus withdrew packs of its frozen beef lasagne on Wednesday after apparently receiving an alert from Comigel.
"People who have bought any Findus beef lasagne products are advised not to eat them and return them to the shop," the FSA spokesperson said in a statement.
After a leak from the meat trade last month, the FSA admitted that meat from eight horses slaughtered in UK abattoirs last year had been found to contain 'bute'.
Tesco and Aldi also withdrew a variety of frozen beef products today, saying they did not conform to specification. Aldi said of its frozen spaghetti Bolognese and lasagna (made by Comigel): "Comigel has flagged concerns that the products do not conform to specification."
The agency's chief executive, Catherine Brown, said it was an "appalling situation".
"I have to say that that the two cases of gross contamination that we see here indicates that it is highly likely there has been criminal and fraudulent activity involved," she told BBC news.
She added: "We are demanding that food businesses conduct authenticity tests on all beef products, such as beef burgers, meatballs and lasagne, and provide the results to the FSA.
"The tests will be for the presence of significant levels of horse meat."
The consumption of horse meat is more common in parts of Europe including France and in central Asia, China and Latin America.