Managers of former meat processing firm Spanghero detained for questioning as authorities continue inquiry into the mislabeling of beef as horse.
In an EU-wide survey using DNA tests, France found more cases of the presence of illegal horsemeat in beef products than any other country.
The rumpus in Europe over horsemeat sold as beef is bringing a bonanza for France's 700 surviving horse butchers.
The French meat processing company knowingly sold horsemeat labelled as beef, says French government, and its licence is being suspended.
Producers, food processors, distributers, supermarkets and representatives from the food industry meet to discuss growing scandal.
Six major French retailers are recalling beef-based frozen meals after the discovery of horsemeat in Findus frozen lasagne dishes.