CHICAGO (AP) — Former heavyweight champion Mike Tyson says he doesn't want to know what led to his 4-year-old daughter's death.

During an interview on "The Oprah Winfrey Show" that aired Monday, Tyson called his daughter Exodus "my angel." Exodus died at a Phoenix hospital on May 26, a day after her neck apparently was caught in a treadmill cord.

Tyson told Winfrey that he didn't want to know details of her death because "if somebody's to blame for it there will be a problem."

The former boxer says his first instinct was rage but now he has no animosity or anger toward anyone. He called his family "my biggest asset." Tyson also says his children are "the only thing that matters to me now."

He was the subject of the recent movie "Tyson," which was based on interviews with him.