The British Meat Producers Association says it "deplores" the latest reported incidents of gross contamination of some meat products.
A Dalepak factory in North Yorkshire was implicated in the horse meat in beefburgers scandal last week.
The BMPA deplores the latest reported incidents of gross contamination of some processed meat products.
We are advised there are no food safety risks involved in the latest incidents.
It is important to distinguish between gross adulteration of products - which may involve illegal behaviour - and incidents where very powerful DNA tests detect low trace levels of unwanted and unintended material.
The BMPA is co-operating with the FSA to establish the facts, and to deal effectively with the issues.
The BMPA has urged its members to be vigilant, and to review their raw material and ingredients sourcing procedures in order to ensure that they meet their responsibilities."