298 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Robert Warren Peterson Missing Person Case

Last seen in Riverside County, California on Jun 6, 2016

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Victim Details

Created

Jan 24, 2026

Case Added

Jan 24, 2026

First Name

Robert

Last Name

Warren Peterson

Current Age

Age At Disappearance

Height

6'4 inches

Weight

180 lbs

Ethnicity

White

Gender

Male

Last Seen

Jun 6, 2016

City

Riverside County

State

California

Zip Code

Riverside County

Agency Name

Riverside County Sheriff's Departmen

Agency Phone

951-955-2450

Last Updated

Sep 14, 2026

Case Description

Any updates on this case? Let us know!

Summary based on 1 source

Robert Warren Peterson, a 54-year-old man, was last seen in Riverside County, California, on June 6, 2016. He has not been heard from since his disappearance. Peterson is a white male with gray hair and hazel eyes. At the time he went missing, he stood 6 feet 4 inches tall and weighed approximately 180 pounds.

Peterson was last seen wearing a brown or maroon shirt and blue basketball shorts. Authorities have noted that he is considered to be at risk, as he has been diagnosed with dementia. Few details regarding the specific circumstances of his disappearance have been made available to the public.

The Riverside County Sheriff's Department is the investigating agency for this missing person case. Despite the passage of time, his case remains open and he is still listed as a missing person.
Last Seen: Jun 6, 2016

Links to Additional Sources (1)

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Robert Warren Peterson - The Charley Project

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.

75%Possible

John Doe — Los Angeles, California

UP17010 • Found Jul 28, 2017

View case

Sex ✓Male

Age 100%Est. 50–65 vs 54 when missing

Race 100%White

Location 75%Same state

TimingFound 14 months after last seen

Weight 100%182 lb vs 180 lb

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.

Robert Warren Peterson Missing Person Case

Last seen in Riverside County, California on Jun 6, 2016

Victim Details

Case Description

Links to Additional Sources (1)

Possible Unidentified Matches (1)

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