Former light heavyweight champion Bob Foster has passed away at the age of 77, according to a report by Albuquerque, New Mexico, news station KRQE.

No statement has been released yet concerning a cause of death.

Foster held at least one light heavyweight title — two at times — from 1968 to 1974, beginning with a fourth-round knockout of Dick Tiger at Madison Square Garden. He would make a total of 14 successful defenses before he retired (though he did return for a brief time).

During that run he tried twice to fight for a heavyweight title. The first attempt he lost to Joe Frazier by second-round knockout in 1970 and the second time lost to Muhammad Ali by eighth-round knockout in 1972.

Foster retired for good in 1978 with a record of 56-8-1 (46 knockouts) and was inducted into the International Boxing Hall of Fame in 1990.

More details to follow.