At least 10 cars were involved in a wreck at the Daytona Speedway on Saturday moments before the end of the Nationwide race, in a crash that sent driver Kyle Larson's car airborne, although he climbed out of the wreckage afterward, ESPN reported.
There was no official word on whether any spectators were injured in the accident. But images of the crash showed debris flying over a catch fence and into the spectator stands, and CNN said some witnesses reported injuries among spectators.
NASCAR President Mike Helton told ESPN, "Our prayers and thoughts are with everybody they (the emergency responders) are working on."
The Florida crash took place a day before NASCAR's top event, the Daytona 500. CNN reported all of the drivers appeared to be safe after the crash.