Ivan Koloff, knowing among wrestling fans as “The Russian Bear,”…

Ivan Koloff, knowing among wrestling fans as “The Russian Bear,” has died. He was 74.

Koloff had been battling liver cancer and was in need of “urgent medical care,” according to a Go Fund Me page set up by his daughter, Rachel Marley, on Feb. 2.

“My dad was diagnosed with liver disease about 10 years ago and while he has been living with it, he chose not to make this announcement public to his fans and friends,” she wrote. “But doctors are now saying that his liver function is getting worse day by day and it will continue to. There are no other medical options available for my dad for a cure. ”