Patrick Baumann, rising star in Olympic circles, dies at 51

BUENOS AIRES, Argentina — Patrick Baumann, the secretary general of basketball's world governing body who was seen as a potential IOC president, has died at the Youth Olympics. He was 51.

Baumann "unexpectedly succumbed to a heart attack" in Buenos Aires despite getting immediate medical help, the International Basketball Federation (FIBA) said Sunday in a statement.

"Basketball has lost a leader, an advocate and a friend and our thoughts are with Patrick's wife and two children at this tragic time," the Switzerland based FIBA said.

Baumann was FIBA'S top administrator for 15 years, and an International Olympic Committee member since 2007.

"We can hardly believe this terrible news," IOC President Thomas Bach said in a statement. "We lose a young and sympathetic leader full of hope who was standing for the future of sport. Our thoughts are with his wife, his children and his family."

NBA Commissioner Adam Silver also praised Baumann's dedication to the game.

"Nobody was more dedicated to the growth of basketball than Patrick," said Silver in a statement. "He loved the game and recognized its power to transform people's lives. He was also a dear friend and colleague who I attended countless games and events with over the past 20 years."

Flags will be flown at half-staff at IOC offices in Buenos Aires and its home city of Lausanne, Switzerland. The IOC said a memorial will be held in the athlete village in Buenos Aires.

A lawyer from Switzerland, Baumann had taken an increasingly important role in Olympic circles.