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An investigation is underway to determine the cause of an aircraft crash in the US state of Nevada which killed nine people and injured at least 56 more.

Mike Houghton, president and CEO of the Reno Air Races, said that mechanical problems might have sent a vintage World War II-era fighter plane crashing into the edge of the grandstand at an air show in the city of Reno on Friday.

Al Jazeera correspondent Rob Reynolds reports from Los Angeles.

Source: Al Jazeera