According to the NPS,

On April 22, 2018, at approximately 2:13 p.m., the Coconino County Sheriff’s Office out of the Page, Arizona substation responded to the Horseshoe Bend parking lot after being notified by Page Police Department that the vehicle of a missing person out of Buckeye, Arizona, had been located by family members. Search efforts located what is believed to be the missing person, deceased at the bottom of the Horseshoe Bend.

Sheriff's Deputies along with National Park Service Rangers conducted a hasty search and visually located from the top of the rim what was believed to be the missing person at the bottom of the rim at 3:22 p.m. A National Park Service Ranger responded to the location via boat vessel and confirmed that a body had been found.

Coconino County Sheriff's Deputies made their way to the body from the top of the rim via an Arizona Department of Public Safety helicopter. The body was then transported by short haul to the top of the rim and taken to Flagstaff, AZ, by the Medical Examiner.

The case is still under investigation pending a positive identification of the body by the Coconino County Medical Examiner's Office.