A Tennessee man camping out for the Sprint Cup race at Talladega Superspeedway died of carbon monoxide poisoning this past weekend.
Authorities suspect a carbon monoxide leak led to the death, SportingNews reports.
Friends of the man and his wife found the couple unresponsive inside their motor home at Talladega Superspeedway on Saturday afternoon, according to Sheriff Jimmy Kilgore.
Deputy Coroner Larry Seals said the couple was likely using a gas stove for heat, and there was a problem with the generator's exhaust system. The man, whose identity has not yet been released, was found dead when authorities arrived, and his wife has been hospitalized in Birmingham.
The man is at least the second NASCAR fan to die while camping out near the track this year.
In May, Nick Bower, 28, was found dead 1.5 miles from the speedway in a grassy field near a creek, according to ECanadaNow. The man, who was from Georgia, had been missing for almost seven days when his body was recovered. His death was ruled an accident.
Another NASCAR fan was killed by a lightning strike two years ago at a track in northeastern Pennsylvania, according to CBS News.
Brian Zimmerman, of Moosic, Pa., died as he stood near his car in the parking lot of Pocono Raceway, according to the Monroe County coroner.
NASCAR spokesman Dave Higdon said at the time that officials are reviewing how the track carried out its emergency procedures.
"Anytime something like this happens, we make sure we look at it again and see if there's anything we should have done different," Higdon said. "It's never a good day for us when someone passes and people are hurt."
The 2013 Camping World RV Sales 500 finished Sunday at Talladega Superspeedway, which can seat up to 175,000 spectators.
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