I do not believe this either. The info is from a lady who purchased a son by KARAT (in Germany) and she asked me for more information about the bloodline as she knows we have Russian Arabians. She told me she heard KARAT died cause of a heart attack but I said I don't believe this, I heard nothing about he passed away. I have looked in the internet about any information but found nothing that's why I asked here, where I think it would be the best to get such an information because I don't like rumors.