The 24-year-old sister of deposed heavyweight champion Mike Tyson died of an apparent heart attack today, police said.
Denise Anderson was found unconscious by her husband in their home in Queens.
Initial reports indicated that Anderson, who weighed between 300 and 400 pounds, may have died of cardiac arrest.
Tyson, 23, lost his undisputed world heavyweight title Feb. 11 when he was knocked out in the 10th round by James (Buster) Douglas in Tokyo, in one of boxing's greatest upsets.
A spokesman for Don King, Tyson's promoter, said the fighter was "very, very dejected" after hearing the news.
In "Fire and Fear," a book about Tyson, author Jose Torres quoted the fighter as saying: "You know something? I never read a book or played school when I was a child. I didn't relate to that. I remember being close to my sister, Denise.