LAS VEGAS - Former heavyweight champion Ken Norton, who beat Muhammad Ali and then lost a controversial decision to him in Yankee Stadium, died Wednesday at a local care facility, his son said. He was 70.

Norton had been in poor health for the last several years after suffering a series of strokes, a friend of the fighter said.

"He's been fighting the battle for two years," said Gene Kilroy, Ali's former business manager. "I'm sure he's in heaven now with all the great fighters. I'd like to hear that conversation."

Norton broke Ali's jaw in their first bout, beating him by split decision in 1973 in a non-title fight in San Diego. They fought six months later, and Ali narrowly won a split decision.

They met for a third time on Sept. 28, 1976, at Yankee Stadium and Ali narrowly won to keep his heavyweight title.

Norton would come back the next year to win a heavyweight title eliminator and was declared champion by the World Boxing Council. But on June 9, 1978, he lost a bruising 15-round fight to Larry Holmes in what many regard as one of boxing's epic heavyweight bouts and would never be champion again.