The death toll from last week's plane crash at an airshow in Nevada has risen to 10.

A World War Two vintage fighter plane crashed into an area of box seats near a grandstand during the National Championship Air Races site outside Reno.

Video taken at the scene showed the plane heading nose-down into the ground.

The pilot, who was among those killed, had issued a “Mayday” before the plane went down. He has been identified as 74-year-old Jimmy Leeward, an air racer and movie stunt pilot.

More than 50 people were injured — some critically. Federal aviation officials are investigating to determine the cause of the crash.