Talladega Superspeedway -- 2 Dead Bodies Found After Race

Two dead bodies were discovered in a trailer at Talladega Superspeedway on Sunday -- following a NASCAR race ... officials say.

Investigators are currently trying to figure out what killed the two men -- who appeared to have been dead for roughly 6 or 7 hours when they were discovered Sunday afternoon in the campground area of the speedway.

We're told there was a 3rd person who was in town with the men for the event -- and that person discovered the bodies when he had returned to the trailer after the race.

Officials say they do not suspect foul play. We're also told it does not appear to be a case of carbon monoxide poisoning.

We spoke with the coroner and asked if drugs or alcohol were involved -- we were told to contact law enforcement. So far, no comment from cops.