Officers responded to an incident May 13 on Craig Pass, about 3 miles south of Old Faithful, where they found a single vehicle driven into a snowbank with a man standing outside.
Catheryn Danyelle Griffin, 38, was dead of a self-inflicted gunshot wound in the car, according to a Wednesday statement by the Yellowstone National Park public affairs office.
The Teton County Coroner’s office determined Griffin’s cause and manner of death, the statement says.
The man with the woman, Michael McCollum, was detained and arrested on suspicion of drug possession and other traffic-related offenses, according to the press release and Griffin’s family.
Griffin’s family confirmed to Cowboy State Daily that McCollum was the man who was with her just before her death. Family members also said in May that authorities suspected suicide as Griffin’s cause of death.
Clair McFarland can be reached at Clair@CowboyStateDaily.com.