The Food Standards Agency found that 60% of the ‘beef’ in Findus lasagne was horse meat. Yes, 60%.
[Edit] News has come in that some packs of this ‘beef’ product were 100% horse meat. There’s talk of fraud.
[Edit #2] Now a veterinary drug called phenylbutazone, known as ‘bute’, has been reported in the lasagne. Here’s a newspaper article about it.