Published: Aug 29, 2010 8:40 PM EDT
Updated: Aug 29, 2010 5:40 PM EDT

INDIANAPOLIS (AP) - The Marion County coroner says a 13-year-old motorcycle racer has died after crashing at Indianapolis Motor Speedway.
      
The coroner says that Peter Lenz sustained "traumatic injuries" on Sunday and was pronounced dead several hours after he fell off his bike and was run over by another motorcycle.

The teen from Vancouver, Wash., and 12-year-old Xavier Zayat both crashed on a warmup lap for the MD250H race, a precursor to the annual MotoGP race.

Medical workers placed Lenz in a neck brace, put him on a stretcher and started chest compressions before taking him to the hospital. Speedway officials said Zayat, from Flushing, N.Y., was not injured.
      
It's the first death at the track since 2003, when IndyCar driver Tony Renna was killed in practice.