Authorities in Texas said a 42-year-old man died late Saturday night after shooting himself in the head during a NASCAR race sponsored by the National Rifle Association (NRA).

The Associated Press reported that the Tarrant County medical examiner's office ruled Kirk Franklin's death a suicide. Franklin allegedly shot himself after getting in an argument with other campers in the infield of the Texas Motor Speedway during the Sprint Cup Series NRA 500.

CNN reported on Monday that, according to police in Fort Worth, Franklin's body was found in the back seat of a truck.

The Yahoo Sports blog From The Marbles reported on Sunday that state law prohibited patrons from bringing firearms into the venue.

Before the race, Sen. Chris Murphy (D-CT) wrote Fox network chief Rupert Murdoch asking him not to televise the event, saying it would "give credence to an extreme organization that is opposed to reasonable policies to stem gun violence."

The race was still televised on Fox Sports, but the NRA was only mentioned once an hour as the title sponsor, and its logo was not part of any in-race graphics.

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