Anybody Loose some Koi

[DOO-E]

we lost some koi yesterday big ones not adultsd but they were 2 feet. we lost s shusui and a orange and white butterfly. Has anybody noticed any of their koi dieing. Apparently somebodye else in lethbridge lost 5 large ones. No apparent reason why they died bothe were nice and fat. We thing the Shusui was a female and got egg bound but that is no excuse for the male butterfly so any suggestions on why they died or has anybody else lost any?