Alexander Dale Oen (1985-2012)

Norway swimming gold-medal favorite Alexander Dale Oen died late Monday after suffering a cardiac arrest. He was with his national team training in Flagstaff, Arizona.

Officials attend a special tribute for Norwegian swimmer Dale Oen during the 2012 European Swimming Championships in Debrecen

Lajos Kosa, mayor of the city of Debrecen, Per Rune Eknes, President of the Norwegian Swimming Federation, Nory Kruchten, President of European Swimming League and Tamas Gyarfas, President of the Hungarian Swimming Association (L-R) attend a special tribute for Norwegian swimmer Alexander Dale Oen during the 2012 European Swimming Championships in Debrecen May 21, 2012. REUTERS/Bernadett Szabo

Alexander Dale Oen

Norwegian world champion swimmer Alexander Dale Oen, pictured in 2011, died of heart failure as the result of a blood clot in one of his coronary arteries, according to autopsy results published Tuesday

SWIM-EUR-HUN

Norway's Henriette Brekke (L) and teammate, wearing black swim caps with inscription ADO, the initials of Alexander Dale Oen, stand after they competed in the heats of the women's 4x100 freestyle swimming event in the 31st European Swimming Championships in Debrecen, on May 21, 2012. Swimming World Champion Dale Oen died suddenly from cardiac arrest during a pre-Olympic training camp in Flagstaff, Arizona on May 1, 2012. AFP PHOTO / FERENC ISZAFERENC ISZA/AFP/GettyImages

Norway's Alexander Dale Oen, pictured in 2011

Norway's Alexander Dale Oen, pictured in 2011. Authorities are still probing the cause of world champion swimmer Alexander Dale Oen's death after an initial autopsy was inconclusive, authorities in Flagstaff, Arizona said

FILE - In this Monday, July 25, 2011 file photo Norway's Alexander Dale Oen shows the gold medal he won in the men's 100m Breaststroke event at the FINA Swimming World Championships in Shanghai, China. The Norwegian Swimming Federation said Tuesday May 1, 2012, world champion Alexander Dale Oen has died after suffering a cardiac arrest. (AP Photo/Eugene Hoshiko, file)

Norway swimming head coach Petter Loevberg takes questions Tuesday, May 1, 2012 in Flagstaff, Ariz. Norway's World Champion swimmer, Alexander Dale Oen, was pronounced dead at Flagstaff medical center after he was found collapsed on the floor of his hotel bathroom late Monday in Flagstaff. The 26-year-old Oen, the 100-meter breaststroke world champion, was training in Flagstaff at the Wall Aquatic Center on the campus of Northern Arizona University. (AP Photo/Matt York)

Flagstaff, Ariz., police cars stand Tuesday, May 1, 2012, outside the hotel where Norway's world champion swimmer Alexander Dale Oen was found collapsed on the floor of his bathroom late Monday. Oen, 26, the 100-meter breaststroke world champion, was pronounced dead at Flagstaff Medical Center. Oen was in Flagstaff to train at the Wall Aquatic Center on the campus of Northern Arizona University. (AP Photo/Matt York)

The swimming pools inside the Wall Aquatic Center are closed Tuesday, May 1, 2012 in Flagstaff, Ariz. Norway's Alexander Dale Oen, the world champion in the 100-meter breaststroke, was pronounced dead at Flagstaff Medical Center after he was found collapsed on the floor of his hotel bathroom late Monday in Flagstaff. Oen, 26, was training in Flagstaff at the aquatic center on the campus of Northern Arizona University. (AP Photo/Matt York)

Norway swimming team doctor Ola Roensen takes questions during a news conference Tuesday, May 1, 2012 in Flagstaff, Ariz. Norway's World Champion swimmer, Alexander Dale Oen, was pronounced dead at Flagstaff medical center after he was found collapsed on the floor of his hotel bathroom late Monday in Flagstaff. The 26-year-old Oen, the 100-meter breaststroke world champion, was training in Flagstaff at the Wall Aquatic Center on the campus of Northern Arizona University. (AP Photo/Matt York)

Alexander Dale Oen won the gold medal in the 100m breaststroke in the 2011 World Championships in Shanghai

Norwegian swimmer Alexander Dale Oen poses with the gold medal after winning the men's 100m breaststroke at the 2011 World Championships in Shanghai. Two-time double Olympic gold medallist Kosuke Kitajima has said the death of Dale Oen has left a "big hole" in his heart before their much anticipated duel at the London Games

Kosuke Kitajima recently set a new Japanese record of 58.90 in the 100m breaststroke

Two-time double Olympic gold medallist Kosuke Kitajima, seen here during a competition in Atlanta, Georgia, last December, has said the death of world champion Alexander Dale Oen has left a "big hole" in his heart before their much anticipated duel at the London Games

Norway's swimming champ found dead

Norway's 100m breaststroke world champion Alexander Dale Oen has died from cardiac arrest

Swimmer Dale Oen dies suddenly

Swimmer Alexander Dale Oen, one of Norway's leading medal hope for the Olympics, has died suddenly of a heart attack.

Swimmer Dale Oen dies suddenly

Swimmer Alexander Dale Oen, one of Norway's leading medal hope for the Olympics, has died suddenly of a heart attack.

The Flagstaff Medical Center is shown Tuesday, May 1, 2012 in Flagstaff, Ariz. Norway's World Champion swimmer, Alexander Dale Oen, was pronounced dead at the medical center after he was found collapsed on the floor of his hotel bathroom late Monday in Flagstaff. He was 26. (AP Photo/Matt York)

The Flagstaff Medical Center is shown Tuesday, May 1, 2012 in Flagstaff, Ariz. Norway's World Champion swimmer, Alexander Dale Oen, was pronounced dead at the medical center after he was found collapsed on the floor of his hotel bathroom late Monday in Flagstaff. He was 26. (AP Photo/Matt York)

Flagstaff, Ariz., police cars stand Tuesday, May 1, 2012, outside the hotel where Norway's world champion swimmer Alexander Dale Oen was found collapsed on the floor of his bathroom late Monday. Oen, 26, the 100-meter breaststroke world champion, was pronounced dead at Flagstaff Medical Center. Oen was in Flagstaff to train at the Wall Aquatic Center on the campus of Northern Arizona University. (AP Photo/Matt York)

FILE - In this Monday, July 25, 2011 file photo Norway's Alexander Dale Oen competes on his way to winning the gold medal in the men's 100m Breaststroke final at the FINA Swimming World Championships in Shanghai, China. The Norwegian Swimming Federation said Tuesday May 1, 2012, world champion Alexander Dale Oen has died after suffering a cardiac arrest. (AP Photo/Wong Maye-E, File)

A Norwegian flag hangs above a closed swimming pool inside the Wall Aquatic Center on Tuesday, May 1, 2012 in Flagstaff, Ariz. Norway's Alexander Dale Oen, the world champion in the 100-meter breaststroke, was pronounced dead at Flagstaff Medical Center after he was found collapsed on the floor of his hotel bathroom late Monday in Flagstaff. Oen, 26, was training in Flagstaff at the aquatic center on the campus of Northern Arizona University. (AP Photo/Matt York)

FILE - In this Tuesday, Aug. 10, 2010 file photo Norway's Alexander Dale Oen celebrates winning the gold medal in the Men's 100m breaststroke final at the Swimming European Championships in Budapest, Hungary. The Norwegian Swimming Federation said Tuesday May 1, 2012, world champion Alexander Dale Oen has died after suffering a cardiac arrest. (AP Photo/Michael Sohn, file)

Alexander Dale Oen (26 years old) 21 May 1985 - 30 April 2012

Alexander Dale Oen was a Norwegian swimmer who united the country with his gold-medal winning performance just days after last year's horrific massacre. He was found dead on April 30th, 2012.

Alexander Dale Oen won the gold medal in the 100m breaststroke in the 2011 World Championships in Shanghai

Norwegian swimmer Alexander Dale Oen poses with the gold medal after winning the men's 100m breaststroke at the 2011 World Championships in Shanghai. Dale Oen has died age 26 at a training camp in the United States, Norway's swim federation announced on Tuesday

Norway's Alexander Dale Oen looks on after he competed in the semi-finals of the men's 50-metre breaststroke swimming event in the FINA World Championships at the indoor stadium of the Oriental Sports Center in Shanghai on July 26, 2011. AFP PHOTO / FRANCOIS XAVIER MARIT (Photo credit should read FRANCOIS XAVIER MARIT/AFP/Getty Images)

Norway's Alexander Dale Oen competes in the semi-finals of the men's 50-metre breaststroke swimming event in the FINA World Championships at the indoor stadium of the Oriental Sports Center in Shanghai on July 26, 2011. AFP PHOTO / MARK RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)

Norway's Alexander Dale Oen competes in the semi-finals of the men's 50-metre breaststroke swimming event in the FINA World Championships at the indoor stadium of the Oriental Sports Center in Shanghai on July 26, 2011. AFP PHOTO / FRANCOIS XAVIER MARIT (Photo credit should read FRANCOIS XAVIER MARIT/AFP/Getty Images)

Norway's Alexander Dale Oen (r) and Brazil's Felipe Alves Franca Da Silva compete in the semi-finals of the men's 50-metre breaststroke swimming event in the FINA World Championships at the indoor stadium of the Oriental Sports Center in Shanghai on July 26, 2011. AFP PHOTO / PETER PARKS (Photo credit should read PETER PARKS/AFP/Getty Images)

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