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Roberto Sylva Missing Person Case

Last seen in Stanton, California on Dec 7, 1996

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Victim Details

Dec 10, 2017

May 11, 2022

Roberto

Sylva

69

40

68 inches

150 lbs

Hispanic / Latino

Male

Dec 7, 1996

Stanton

California

Orange County

90680

44

Orange County Sheriff's Department

Santa Ana

California

Orange County

92703

550 North Flower Street, California

7146477000

County

Law Enforcement

www.ocsd.org

96-63233

Orange County Sheriff's Department

Black

Black

Black

Oct 12, 2026


Area Last Seen:

Case Description

Any updates on this case? Let us know!
Summary based on the NamUs case record (MP41300) and 3 other sources
Roberto Mercado Sylva, aged 40, was last seen on December 7, 1996, at his home in Stanton, California. He has not been heard from since, and few details about his disappearance have emerged over the years. At the time of his disappearance, Sylva was wearing black pants, a blue t-shirt, a blue jacket, and white sneakers. He also had a distinguishing scar on his abdomen and was missing a middle upper tooth. Despite investigations by the Orange County Sheriff's Department, his case remains unsolved.

Sylva's family and law enforcement have been searching for answers, but little information has surfaced regarding his whereabouts or the circumstances of his disappearance. Anyone with relevant information is encouraged to contact the authorities to help bring closure to the case.
Last Seen: Dec 7, 1996

Links to Additional Sources (3)

See any mistakes? Let us know!
  • Roberto Mercado Sylva | State of California - Department of Justice
  • 928DMCA - Roberto Mercado Sylva - Doe Network
  • Missing Person / NamUs #MP41300 | NamUs

    • 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.

    85%Strong
    John Doe — Santa Ana, California - unidentified case UP7689
    John Doe — Santa Ana, California
    UP7689 • Found Feb 15, 2000
    View case
    Sex ✓Male
    Age 100%Est. 40–55 vs 40 when missing
    Race 100%Hispanic
    Location 100%5 mi away, same county
    TimingFound 3 years after last seen
    Height 84%5'6" vs 5'8"
    Weight 100%151 lb vs 150 lb
    Hair 100%Black vs Black
    Eyes 90%Brown vs Black
    84%Moderate
    John Doe — City of Industry, California - unidentified case UP3026
    John Doe — City of Industry, California
    UP3026 • Found May 29, 2006
    View case
    Sex ✓Male
    Age 100%Est. 40–55 vs 40 when missing
    Race 100%Hispanic
    Location 99%14 mi away, same state
    TimingFound 9 years after last seen
    Height 100%5'4"–5'8" vs 5'8"
    Weight 95%131 lb vs 150 lb
    Hair 100%Black vs Black
    Eyes 90%Brown vs Black
    83%Moderate
    John Doe — Los Angeles, California - unidentified case UP3083
    John Doe — Los Angeles, California
    UP3083 • Found Aug 15, 2005
    View case
    Sex ✓Male
    Age 100%Est. 32–42 vs 40 when missing
    Race 100%Hispanic
    Location 97%22 mi away, same state
    TimingFound 9 years after last seen
    Height 100%5'9" vs 5'8"
    Weight 100%154 lb vs 150 lb
    Hair 60%Brown vs Black
    Eyes 90%Brown vs Black
    83%Moderate
    John Doe — Los Angeles, California
    UP3364 • Found Jun 11, 2000
    View case
    Sex ✓Male
    Age 85%Est. 35–55 vs 40 when missing
    Race 100%Hispanic
    Location 97%22 mi away, same state
    TimingFound 4 years after last seen
    Height 100%5'3"–5'9" vs 5'8"
    Weight 100%130–155 lb vs 150 lb
    Hair 100%Black vs Black
    Eyes 90%Brown vs Black
    83%Moderate
    John Doe — Pacoima, California
    UP3436 • Found Oct 15, 1997
    View case
    Sex ✓Male
    Age 91%Est. 42–52 vs 40
    Race 100%Hispanic
    Location 92%41 mi away, same state
    TimingFound 10 months after last seen
    Height 84%5'6" vs 5'8"
    Weight 97%167 lb vs 150 lb
    Hair 100%Black vs Black
    Eyes 90%Brown vs Black
    82%Moderate
    John Doe — Van Nuys, California - unidentified case UP3052
    John Doe — Van Nuys, California
    UP3052 • Found Nov 4, 2005
    View case
    Sex ✓Male
    Age 100%Est. 40–50 vs 40 when missing
    Race 100%Hispanic
    Location 93%36 mi away, same state
    TimingFound 9 years after last seen
    Height 84%5'6" vs 5'8"
    Weight 95%131 lb vs 150 lb
    Hair 100%Black vs Black
    Eyes 90%Brown vs Black
    82%Moderate
    John Doe — San Gabriel, California - unidentified case UP3115
    John Doe — San Gabriel, California
    UP3115 • Found Mar 19, 2004
    View case
    Sex ✓Male
    Age 85%Est. 40–60 vs 40 when missing
    Race 100%Hispanic
    Location 97%21 mi away, same state
    TimingFound 7 years after last seen
    Height 100%5'3"–5'7" vs 5'8"
    Weight 100%150 lb vs 150 lb
    Hair 100%Black vs Black
    Eyes 90%Brown vs Black
    82%Moderate
    John Doe — Long Beach, California
    UP3413 • Found Jun 4, 1998
    View case
    Sex ✓Male
    Age 85%Est. 35–60 vs 40 when missing
    Race 100%Hispanic
    Location 100%11 mi away, same state
    TimingFound 18 months after last seen
    Height 100%5'6"–5'11" vs 5'8"
    Weight 84%123 lb vs 150 lb
    Hair 40%Gray vs Black
    Eyes 90%Brown vs Black
    82%Moderate
    John Doe — Los Angeles, California - unidentified case UP154628
    John Doe — Los Angeles, California
    UP154628 • Found Dec 8, 2025
    View case
    Sex ✓Male
    Age 100%Est. 40–50 vs 40 when missing
    Race 100%Hispanic
    Location 97%23 mi away, same state
    TimingFound 29 years after last seen
    Height 100%5'7"–5'9" vs 5'8"
    Weight 100%150–160 lb vs 150 lb
    Hair 100%Black vs Black
    Eyes 90%Brown vs Black
    81%Moderate
    John Doe — Los Angeles, California - unidentified case UP60986
    John Doe — Los Angeles, California
    UP60986 • Found Sep 22, 2019
    View case
    Sex ✓Male
    Age 100%Est. 45–60 vs 40 when missing
    Race 100%Hispanic
    Location 97%22 mi away, same state
    TimingFound 23 years after last seen
    Height 100%5'5"–5'9" vs 5'8"
    Weight 100%154 lb vs 150 lb
    Hair 70%Gray vs Black
    Eyes 90%Brown vs Black

    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.

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    Forum Posts (1)

    Roberto Mercado Sylva, 40, was last seen at his Stanton, California home on December 7, 1996, and... ...Read More
    12/10/2023

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