Three spectators and a racecar driver were injured during an incident at the New London-Waterford Speedbowl Sunday night.
The racecar driver went into and up along the fence, injuring three onlookers in the process, according to police.
The injuries appeared to be minor and everyone is expected to be okay.
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The speedbowl said this was the final day of races to end the season.
It is unknown what caused the crash.
No additional information was immediately available.