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Crime Solvers Central
302 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

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Summary based on the NamUs case record (MP20118) and 2 other sources
Robert Ralph Prough, a **31‑year‑old White male**, was last seen on **May 6, 2004** in **Lakewood**, located in **Los Angeles County, California**. At the time of his disappearance, Prough was described as approximately **6 ft 2 in tall**, weighing around **140 lbs**, with **brown hair and blue eyes**.

Few specifics are known regarding what preceded his disappearance. Publicly accessible records and missing‑person databases note simply that he was last seen in Lakewood on that date, but there is no available information describing his activities that day, who he was with, or where exactly in Lakewood he was last seen.

Law enforcement agencies, specifically the **Los Angeles County Sheriff’s Department**, opened an investigation under case number **004‑33294‑1322‑400**. Dentals, fingerprint records, and DNA information are documented as available — suggesting authorities took steps to preserve identifiers ‑‑ yet no substantive leads or confirmed sightings have emerged in the nearly two decades since his disappearance.

His case is also recorded in the **NamUs** database under **MP20118**, with creation date April 12, 2021, confirming the disappearance date and providing official government‑level tracking details. NamUs lists “last contact” on May 6, 2004, but offers no further descriptive narrative regarding the circumstances.

Available sources note that the investigation remains unresolved. According to publicly accessible entries, “few details have emerged,” and the case remains unsolved with no clear indication that Prough was located or that new developments have surfaced.

Despite this, law enforcement has maintained formal documentation of dental, fingerprint, and DNA data. These identifiers remain available for future comparison with unidentified remains or other investigative matches, reflecting a continued effort to keep the case open should new information or technology permit a breakthrough.

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Unfortunately, beyond the quantitative baseline details and official documentation, the public record offers very little narrative about where Robert was that day, the context of his disappearance, or whether any persons of interest or witness statements were collected. His case remains among the many unresolved missing‑person files in California, though authorities retain forensic records should the opportunity for identification or additional information arise.

Last Seen: May 6, 2004

Links to Additional Sources (2)

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Possible Unidentified Matches (10)

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.

82%Moderate
John Doe — South Gate, California
UP10986 • Found Oct 2, 2012
View case
Sex ✓Male
Age 100%Est. 28–38 vs 31 when missing
Race 100%White
Location 100%8 mi away, same county
TimingFound 8 years after last seen
Height 100%5'7"–6'1" vs 6'2"
Weight 96%157 lb vs 140 lb
Hair 60%Black vs Brown
81%Moderate
John Doe — Irwindale, California
UP12863 • Found Feb 13, 2014
View case
Sex ✓Male
Age 100%Est. 40 vs 31 when missing
Race 100%White
Location 98%19 mi away, same county
TimingFound 10 years after last seen
Height 100%5'7"–6'1" vs 6'2"
Hair 100%Brown vs Brown
79%Possible
John Doe — Los Angeles, California - unidentified case UP16874
John Doe — Los Angeles, California
UP16874 • Found Jul 20, 2017
View case
Sex ✓Male
Age 100%Est. 30–45 vs 31 when missing
Race 100%White
Location 100%8 mi away, same county
TimingFound 13 years after last seen
Height 100%5'10"–6'2" vs 6'2"
77%Possible
John Doe — Glendora, California
UP7522 • Found Jul 13, 2008
View case
Sex ✓Male
Age 85%Est. 32–48 vs 31 when missing
Race 100%White
Location 96%26 mi away, same county
TimingFound 4 years after last seen
Height 68%5'7"–5'11" vs 6'2"
Weight 100%114–150 lb vs 140 lb
Hair 60%Black vs Brown
76%Possible
John Doe — Los Angeles, California - unidentified case UP12864
John Doe — Los Angeles, California
UP12864 • Found Feb 13, 2014
View case
Sex ✓Male
Age 85%Est. 28–50 vs 31 when missing
Race 100%White
Location 99%15 mi away, same county
TimingFound 10 years after last seen
Height 84%5'7"–6'0" vs 6'2"
Weight 70%175–190 lb vs 140 lb
Hair 100%Brown vs Brown
Eyes 0%Brown vs Blue
76%Possible
John Doe — Laverne, California
UP3082 • Found Aug 19, 2005
View case
Sex ✓Male
Age 85%Est. 27–47 vs 31 when missing
Race 100%White
Location 95%28 mi away, same county
TimingFound 15 months after last seen
Weight 91%160 lb vs 140 lb
Hair 40%Gray vs Brown
75%Possible
John Doe — Hawthorne, California - unidentified case UP88645
John Doe — Hawthorne, California
UP88645 • Found Jan 11, 2022
View case
Sex ✓Male
Age 85%Est. 30–50 vs 31 when missing
Race 100%White
Location 99%12 mi away, same county
TimingFound 18 years after last seen
Height 68%5'5"–5'11" vs 6'2"
Weight 100%140 lb vs 140 lb
Hair 100%Brown vs Brown
Eyes 0%Brown vs Blue
75%Possible
John Doe — Los Angeles, California - unidentified case UP78168
John Doe — Los Angeles, California
UP78168 • Found Mar 19, 2020
View case
Sex ✓Male
Age 85%Est. 45–65 vs 31 when missing
Race 100%White
Location 98%17 mi away, same county
TimingFound 16 years after last seen
Height 52%5'5"–5'10" vs 6'2"
Weight 100%140–160 lb vs 140 lb
Hair 70%Gray vs Brown
Eyes 100%Blue vs Blue
75%Possible
John Doe — Los Angeles, California
UP11282 • Found Mar 5, 2013
View case
Sex ✓Male
Age 100%Est. 35–50 vs 31 when missing
Race 100%White
Location 99%15 mi away, same county
TimingFound 9 years after last seen
Weight 100%143 lb vs 140 lb
Hair 60%Black vs Brown
Eyes 0%Brown vs Blue
75%Possible
John Doe — Castaic, California - unidentified case UP7578
John Doe — Castaic, California
UP7578 • Found Mar 8, 2010
View case
Sex ✓Male
Age 100%Est. 22–35 vs 31 when missing
Race 100%White
Location 89%52 mi away, same county
TimingFound 6 years after last seen
Height 52%5'10" vs 6'2"
Weight 81%113 lb vs 140 lb
Hair 60%Black vs Brown

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.