Jacques Rogge, who served as the president of the International Olympic Committee for 12 years until 2013, has died. He was 79 years old.
The IOC reported his death "with great sadness" on Sunday.
Rogge is well known in Japan because he announced that Tokyo had been selected to host the 2020 Games at the IOC's general meeting in 2013.
He was a surgeon from Belgium who competed in sailing events at three summer Olympics.
Rogge became the eighth IOC chief in 2001. He succeeded Juan Antonio Samaranch, who worked to make the Olympics a commercial success during his 21 years in office.
As IOC chief, Rogge tried to contain the growing size and cost of the Games. He placed an effective cap on the number of participating athletes and reviewed the sporting events. He is known for taking a tough stance against doping. He also started the Youth Olympics to nurture young talent.
In the IOC's statement regarding his death, current President Thomas Bach praised Rogge as "an accomplished President" who helped to modernize and transform the organization.
Bach said Rogge "will be remembered particularly for championing youth sport and for inaugurating the Youth Olympic Games." The president added, "He was also a fierce proponent of clean sport, and fought tirelessly against the evils of doping."
Bach also said, "The entire Olympic Movement will deeply mourn the loss of a great friend and a passionate fan of sport."