Three-time Indianapolis 500 winner Dario Franchitti was taken to the hospital and several spectators suffered injuries as a result of a crash on the last lap of Sunday's Shell-Pennzoil Grand Prix of Houston, the Houston Chronicle reported.
The crash also involved Takuma Sato and E.J. Viso and occurred after Sato lost control of his vehicle.
Franchitti's car went airborne after hitting Sato's left rear, and Franchiti's vehicle seriously damaged part of the catch fencing.
An IndyCar spokesperson said Franchitti was transported by ambulance an area hospital, and team owner Chip Ganassi said Franchitti was not seriously hurt.
Thirteen spectators were treated for minor injuries at the race track, the Chronicle reported. Two fans were taken to the hospital.