Dallas police officers responded to a call at 5:42 a.m. at the Shell station at the corner of Oak Lawn and Lemmon Avenue on Friday.
According to a police spokesman, the first responder at the scene found a car crashed into a tree at the station and noticed the driver had a gunshot wound. He was transported to Parkland Memorial Hospital where he was pronounced dead.
A police official said there are indications that the shot was fired from within the vehicle, making the driver lose control and crash. Witnesses said after the crash a black male exited the vehicle and left on foot in an unknown direction.
Police are waiting for a report from homicide.