A group of ten people, including a number of notable French sports stars, have been killed in a helicopter crash in Argentina. The crash happened during filming for a reality show called Dropped, an adventure-style survival show.

Among those killed in the tragic crash include Olympic swimming gold medalist Camille Muffat, Olympic boxer Alexis Vastine and sailor Florence Arthaud.

The accident happened in the La Rioja province of Argentina at around 5.15pm local time yesterday. "Apparently, the two helicopters collided as they were filming. There are no survivors," said a spokesman for the La Rioja region, Horacio Alarcon. 

According to the area's Secretary of Security, Cesar Angula, "an explosion occurred and it’s believed that they [the helicopters] collided." 

Dropped's producers, Adventure Line Productions (ADL) confirmed the ten deaths in a statement this morning. "All the ADL teams are devastated and share the deep pain of the families and loved ones they are in contact with. We are in contact with the production teams on site [and] with the French and Argentine authorities."

Camille Muffat, won three medals for her country in the 2012 London Olympics, while Alexis Vastine won bronze in the light welterweight category in the 2008 Beijing Olympics. Florence Arthaud was often cited as one of the best sailors in the world, having succeeded hugely in a very male-dominated field.

Our thoughts are with the friends and loved ones of those killed at this time.