Horsemeat has now been confirmed in some frozen lasagne on sale in France too.
However, the horsemeat lasagne had been supplied to Findus by the French food company, Comigel.
Findus UK became caught up in the row this week after horsemeat was found in its lasagne.
The affected products are Birds Eye's Traditional Spaghetti Bolognese and Beef Lasagne, and Taco Bell's Ground Beef.
BBC: Horsemeat scandal: Creative Foods lasagne test positive
Horsemeat has also been found in branded and supermarket-own ready meals, including lasagne and spaghetti bolognese.
The discovery was made in the lasagne made at Flint-based Creative Foods, which is owned by food supplier Brakes.
BBC: Horsemeat scandal: Creative Foods lasagne test positive
In Germany, officials announced that a shipment of frozen lasagne suspected of containing horsemeat had arrived in the country.
German authorities suspect a batch of lasagne sent from Luxembourg to a retailer in the state of North Rhine-Westphalia.
It said beef lasagne was the only product affected and it was sourced externally rather than manufactured by Findus.
It follows the discovery that Findus lasagne contained up to 100% horse meat.
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For lunch, try the kangaroo baguette sandwich, made with marinated kangaroo loin, the emu pumpkin lasagne or the creamed crocodile penne pasta.
"This concerns products that are most likely to have been contaminated, such as beef lasagne and other budget ranges, " Smythe said.
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Some Findus frozen beef in lasagne, made by a French food processing company, was found to be up to 100% horsemeat.
Horsemeat has been detected in frozen lasagne on sale in Germany and supermarkets have started removing the product from their shelves.
They advised them to remove Findus Beef Lasagne and Aldi's Today's Special Frozen Beef Lasagne and Today's Special Frozen Spaghetti Bolognese.
In a statement, the company said sales of the elk lasagne were suspended last month after Belgian authorities detected pork in them.
Drag entertainer Stephen Richards, who performs as Lola Lasagne, said this year's Brighton and Hove Pride was going back to its roots.
Then we fled downtown through the eternal snows for a strictly vegetarian lasagne in a restaurant full of smoke and lean fellow reporters.
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The Real supermarket chain said it had withdrawn TiP frozen lasagne - the latest tainted processed food to figure in a Europe-wide scandal.
Six big French retailers -- Auchan, Casino, Carrefour, Cora, Picard and Monoprix -- said Sunday that they were recalling lasagne and other products.
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Creative says it has now stopped using Pinnacle Foods as a supplier, and Brakes is also recalling one of its own-brand lasagne products as a precaution.
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The tests covered a range of frozen, chilled or canned products that included lasagne, chilli con carne, cottage pie, ravioli, cannelloni and spaghetti bolognese.
Renfrewshire Council had withdrawn products sourced from the Brakes Group over the horse DNA detected in lasagne the firm produces for a pub company.
Brakes said one positive test at 1% horse DNA was reported by a customer of Creative Foods for a lasagne made exclusively for that outlet.
BBC: Horsemeat scandal: Creative Foods lasagne test positive
Renfrewshire Council this week withdrew products sourced from the Brakes Group after horse DNA was detected in lasagne the firm produces for a pub company.
One of the latest cases involved the brand Findus, which last week revealed that some of its frozen beef lasagne dishes were actually 100% horsemeat.
If the horsemeat scandal encourages people to eat fewer meals of mass-produced burgers, lasagne and bolognese, it would be one positive outcome from this unpleasant scandal.
In late February, tests on Birds Eye spaghetti bolognese, 340g, and beef lasagne, 400g, were found to contain horse DNA. They were removed from the supermarket shelves.
Environment Secretary Owen Paterson said the frozen burgers from Tesco and the lasagne from Findus were believed to be linked to suppliers in Ireland and France respectively.
Last week Findus UK took its frozen beef lasagne, made by Comigel, off the shelves after some were found to have up to 100% horsemeat in them.
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