An autopsy for the man found dead, his body burned in a small brush fire in Naches has found no evidence of foul play, like a bullet or stab wound.
The medical examiner says there's no clear cause of death yet.
The county coroner says a toxicology report will be able to determine whether or not the man died from drugs or alcohol, or if the fire is what killed him.
Of course, that still leaves the mystery of how the fire started right where the man was found, near the Windy Point campground on Monday.
Detectives say they're unable to determine how the fire started, but they didn't find any sign of accelerant.
Officers are hoping someone comes forward saying they know a man who's 5'5" and about 170 pounds who's been missing for several days now.
"Could be anything. Maybe he was trying to smoke. Maybe he was feeling suicidal, maybe drugs were involved.