An out-of-control monster truck shot into a crowd of spectators at a Mexican air show, killing at least eight people and hurting 80 others, officials said.
The driver was detained last night on suspicion of manslaughter and officials said they were investigating possible safety violations in the setup of the show.
Carlos Gonzalez, spokesman for the Chihuahua state prosecutors' office, said the driver appeared to have lost control of the truck after leaping over cars it was crushing during a demonstration at the Extreme Aeroshow on Saturday.
Video taken by a spectator shows the truck making an initial pass over two cars, then making a second pass at higher speed, coming down sharply nose-first and bouncing violently before piling straight into the crowd.
Some witnesses said the driver appeared to have hit his head on the interior of the truck as he drove over the old cars, with at least two reporting seeing his helmet come off before the massive vehicle drove into the crowd of terrified spectators.