Former gymnastics coach Bela Karolyi, best known for guiding Nadia Comaneci to the sport's first 'perfect 10', dies aged 82.

Karolyi and wife Martha trained multiple Olympic gold medalists and world champions in the US and Romania, including Nadia Comaneci and Mary Lou Retton.

Bela Karolyi, the legendary and controversial Romanian American gymnastics coach who helped lead Mary Lou Retton, Nadia Comaneci and Kerri Strug to Olympic gold, has died, USA Gymnastics announced. He was 82.