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Case Description

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Summary based on the NamUs case record (MP122523) and 4 other sources
In the quiet community of Sun City, Arizona, concern grew for 48-year-old Robert Joseph Downs, a man who was last seen on the afternoon of May 10, 2024. A resident of North Agua Fria Drive, Robert was reported missing two days later, on May 12, 2024. On the day he was last seen, Robert had spent most of the day with a friend who stated that he dropped Robert back at his home around 4:00 PM. Adding to the distress of his disappearance, both his phone and wallet were discovered left behind at his residence. Robert is described as a white male, standing at 5 feet 6 inches tall and weighing between 170 and 180 pounds. He has long brown hair that falls below his shoulders, brown eyes, and a trimmed brown and gray beard and mustache.

The investigation into Robert's whereabouts took a significant turn on the morning of May 13, 2024, when the truck he used was found abandoned. The vehicle was located on Castle Hot Springs Road, near the Holcim Castle Hot Springs Rock Pit #2, in a remote area of far north Peoria. The discovery of the truck, far from his Sun City home, deepened the mystery surrounding his disappearance and intensified the search efforts. The Maricopa County Sheriff's Office is handling the investigation and has asked for the public's assistance in locating him.

The circumstances leading up to and following May 10th remain the focus of the ongoing investigation. The narrative of his last known movements, a day spent with a friend culminating in a ride home, leaves a gap between his supposed return and the discovery of his absence. The subsequent finding of his truck in a distant, unpopulated area adds a troubling layer to the case. With his personal effects left behind, the case of Robert Downs is a somber reminder of how suddenly a person can vanish, leaving behind more questions than answers for their loved ones and community.

Last Seen: May 10, 2024

Possible Unidentified Matches (1)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

76%Possible
John Doe — Tucson, Arizona - unidentified case UP158804
John Doe — Tucson, Arizona
UP158804 • Found Dec 14, 2025
View case
Sex ✓Male
Age 100%Est. 48–62 vs 48 when missing
Race 100%White
Location 71%120 mi away, same state
TimingFound 19 months after last seen
Height 100%5'4"–5'8" vs 5'6"

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.