Dwight Muhammad Qawi, the Hall of Fame fighter who took up boxing in prison and became a two-weight world champion, has died. He was 72.

Qawi's sister, Wanda King, said he died on Friday following a five-year battle with dementia.

Born Dwight Braxton in Baltimore, Qawi grew up in Camden. He competed in the boxing program at Rahway State Prison while serving a sentence for armed robbery, and turned professional at age 25 soon after his release in 1978.

In December 1981, Qawi — who legally changed his name in 1982 following his conversion to Islam — stopped Matthew Saad Muhammad in the 10th round to win the WBC light heavyweight belt. Qawi stopped Saad again eight months later, taking six rounds.

After a loss Michael Spinks, the 5-foot-7 Qawi — called "The Camden Buzzsaw" — moved up in weight and took the WBA cruiserweight title from Piet Crous in July 1985. Qawi lost the title to future heavyweight champion Evander Holyfield in a 15-rounder in July 1986.

Qawi later fought as a heavyweight, with George Foreman stopping him in seven rounds.

Qawi retired in 1998 at age 46 with a 41-11-1 record and 25 knockouts. He was inducted into the International Boxing Hall of Fame in 2004.

After his retirement from the ring, he worked as a boxing trainer, youth advocate and drug and alcohol counselor.