Six French supermarket chains - Carrefour, Monoprix, Auchan, Casino, Cora, and Picard - have also withdrawn ready-meals from Findus and Comigel.

BBC: Horsemeat scandal: Beef products 'pose no health risk'

The chains taking action include Carrefour, Monoprix, Auchan, Casino, Cora and Picard.

BBC: Findus Beef Lasagne

Six big French retailers -- Auchan, Casino, Carrefour, Cora, Picard and Monoprix -- said Sunday that they were recalling lasagne and other products.

CNN: Battle over blame after horse meat found in beef products

The seven French supermarket chains that have already withdrawn some of their frozen meat-based meals, including lasagne, from the shelves are Auchan, Casino, Carrefour, Cora, Monoprix, Grand Jury and Picard.

BBC: Horsemeat scandal: France summons meat industry chiefs