The sports world reached out to various outlets to express their sorrow upon hearing about the deaths of former Olympic swimming champion Camille Muffat, Olympic boxing medallist Alexis Vastine and yachtswoman Florence Arthaud. Trio were in Argentina taking part in a reality television show called Dropped.
The International Olympic Committee announced in a statement that its Olympic flag would fly at half-mast for three days at the IOC headquarters to honour the "great champions".
"We are shocked by this sad news. Our thoughts are with the families and friends of these great athletes who have left us," the IOC said in a statement.
"With them, the world of sport and the Olympic family have lost three of their key members. They were all not only champions in their sport but also contributed greatly as role models.
"The Olympic Movement mourns with their families and friends, their fellow athletes, the French National Olympic Committee and with France."
Swimming’s ruling body FINA tweeted: "To Muffat's family and friends and to the entire Aquatic community in France, FINA expresses its deepest condolences."
The 25-year-old Muffat won three medals at the London 2012 Olympics including gold in the 400m freestyle. The Nice native, who captured silver in the 200m freestyle and bronze in the 4x200m freestyle relay, retired from competitive swimming in 2014.