The parents of 5 Arches National Park chief ranger Deborah Joan Swanson, whose death was originally determined to be a suicide, have filed a wrongful death suit in 7th District Court, court officials say.

Swanson's body was found on New Year's Day 1986 in her Moab home. She died from a single gunshot wound to the head. The state medical examiner's initial autopsy report determined the wound was self-inflicted.But her parents convinced state officials to reopen the investigation. A second autopsy report, court officials said, resulted in an amended death certificate.

The new cause of death said Swanson's fatal wound was "undetermined if (inflicted) accidentally or purposefully."

The wrongful death suit names 20 "John Does" as defendants. It states the defendants will be identified when and if an investigation connects them to Swanson's death.