Norwegian swimming world champion Alexander Dale Oen has died at a training camp in Flagstaff, Arizona, at the age of 26.
Norwegian swimming federation president Per Rune Eknes announced that Dale Oen died after apparently suffering a cardiac arrest.
The federation said in a statement that the 100m breaststroke world champion was found collapsed on the floor of his bathroom on Monday. He was taken to the Flagstaff Medical Center.
Hospital spokeswoman Starla Collins confirmed the death, but did not provide further details.
Dale Oen won the 100m breaststroke at the World Championships in Shanghai last July and took silver at the 2008 Beijing Olympics. He was one of Norway's top medal hopes for this summer's London Games.