Horsemeat being sold to the public as beef is "fraud" and a "conspiracy against the public", the Environment Secretary said today.
Asked if there were any plans to test for traces of other meats, such as dog, Owen Paterson said:
"It may be very isolated, it might be a small number of suppliers involved in the horse trade we don't know, but I think that as we progress and we'll know more over the course of the next few weeks, we can decide what to do next".
A leading food scientist says the rule change that sparked the horsemeat beef scandal affected lamb products too, and they should be tested.
Retailers and the Food Standards Agency held an emergency meeting today to decide how to proceed with the horsemeat scandal.
The government has called an emergency meeting with retailers and the Food Standards Agency to discuss the horsemeat scandal.