Beef containing horse DNA that was supplied by an Irish company to major food companies including Tesco and Iceland originated in Poland, Ireland's agricultural department have said.
The British food industry was rocked by the revelation retailers sold beef products that contained horse DNA, a scandal that has also left Ireland's 2 billion euros beef industry reeling from the knock-on effects.
Results of tests showed that Polish ingredients used by Irish burger manufacturer Silvercrest contained 4.1 percent horse DNA, the agriculture department said in a statement.
The horsemeat scandal demonstrates how long and complicated the food chain we all depend on is. Regulating our food supply is expensive.
Some of the best, and worst, jokes and gags from Twitter users discussing the discovery of horse DNA in some supermarket beef burgers.
We've seen the jokes on Twitter but the discovery of horse and pig DNA in beefburgers poses a serious question; where did it come from?