At least two people were killed when a helicopter being used by a film crew with the US television channel MTV crashed into a reservoir in western Argentina.
The security minister for Mendoza province, Gianni Venier, said the helicopter crashed about 30km outside the city of Mendoza, the provincial capital around 620km west of Buenos Aires.
Wreckage from the aircraft has been found, and a pilot and a technician aboard the helicopter were reported killed when the craft plunged into the reservoir at Potrerillos de Mendoza dam.
It was unclear whether other people were aboard the helicopter at the time of the accident.
Rescuers trying to reach the downed helicopter said it had plunged some 200ft underwater.
The crash is the second this year involving a helicopter taking part in filming in Argentina.
In March, ten people, eight French nationals and two Argentines, were killed during the filming of a show for reality TV in France.
The dead included three well-known French athletes: pioneering sailor Florence Arthaud; Olympic swimmer Camille Muffat; and boxer Alexis Vastine.