A plane plunged into the stands at an air race event in Reno in what an official described as a "mass casualty situation."
It wasn't immediately known how many people were killed. But video of the crash showed a horrific scene of bodies and wreckage at the front of the stands.
Mike Draper, a spokesman for the air races, told The Associated Press that Jimmy Leeward was the pilot of the P-51 Mustang that crashed into the box seat area at the front of the grandstand about 4:30 p.m. He said he did not have any information on the number of injured.
The National Championship Air Races draws thousands of people every year in September to watch various military and civilian planes race.