YELLOWSTONE NATIONAL PARK, Wyo. (AP) — National Park Service documents released Tuesday offer new details but no solid clues as to what happened to a missing man whose foot was found floating in a shoe in a Yellowstone National Park hot spring last summer.

The documents show that investigators found a laptop computer, notebooks and handwriting in the man's car but no suicide note.

Investigators used DNA samples to identify the remains as belonging to 70-year-old Il Hun Ro, of Los Angeles.

His foot was found Aug. 16 in Abyss Pool, a more than 50-foot-deep hot spring with temperatures up to 140 degrees.

19th Annual Breaking the Silence Walk Offers Healing, Harmony, & Hope

Photos from the 19th Annual 'Breaking the Silence Walk,' sponsored by the Natrona County Suicide Prevention Task Force.

Army National Guard Best of the Best Competition 2022

More From Wake Up Wyoming