French experts take off in a helicopter to the site of Monday's deadly helicopter crash, at La Rioja
French experts sent by France's government take off in a helicopter to the site of Monday's deadly helicopter crash, at La Rioja airport, March 11, 2015. France mourned on March 10 the deaths of three sports stars who were among 10 people killed when two helicopters collided in a remote region of Argentina during the filming of a reality TV show. Investigators removed the bodies of Olympic swimmer Camille Muffat, yachtswoman Florence Arthaud and boxer Alexis Vastine from the charred wreckage of the two aircraft, but said it was still unclear what caused the accident on Monday afternoon in the rugged western province of La Rioja. REUTERS/Marcos Brindicci (ARGENTINA - Tags: DISASTER SPORT TRANSPORT OLYMPICS)