NEW YORK  -- The trailblazing filmmaker who spent decades documenting the stories of Olympic athletes has died. Bud Greenspan was 84.

Greenspan's companion, Nancy Beffa, says he died Saturday from complications of Parkinson's disease at his home in New York City.

The award-winning filmmaker was known for documentaries chronicling athletes and their stories at both Winter and Summer Olympics. Beffa said his most recent work dealt with the rough cuts of films from the 2010 Vancouver Winter Games.

The International Olympic Committee described Greenspan as "a true supporter of the Olympic Games and their values throughout his career."

A native New Yorker, Greenspan received his start in radio before turning to film.