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Robert Bennett Missing Person Case

Last seen in Whittier, California on Feb 16, 1983

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Victim Details

Aug 25, 2011

Aug 12, 2020

Robert

Bennett

94

51

70 inches

170 lbs

White / Caucasian

Male

Feb 16, 1983

Whittier

California

Los Angeles County

10669

Los Angeles County Sheriff Department

Commerce

California

,

083-00980-0894-011

Feb 16, 1983

Los Angeles County Sheriff Department

Black

Blue

Blue

Oct 10, 2026


Area Last Seen:

Case Description

Any updates on this case? Let us know!
Summary based on the NamUs case record (MP12125) and 8 other sources
Robert Glenn Bennett, 51, was last seen on February 16, 1983, in Los Angeles, California, while working as a supervisor at the Whittier Narrows Sanitation Plant. On that day, he drove with his co-worker, John Alcantara, into a remote area near the plant. Bennett never returned, and his wife reported him missing that evening. Investigators later found large amounts of blood and tire tracks in the area, leading to suspicions of foul play.

Years later, Alcantara, who had been a long-time suspect, was charged with Bennett’s murder in 2005. Witnesses came forward, claiming Alcantara confessed to shooting Bennett in the head, dismembering his body, and disposing of the remains at the Puente Hills Landfill. Bennett’s body was never recovered despite extensive searches. Alcantara was convicted of the murder in 2008 and sentenced to 25 years to life in prison.
Last Seen: Feb 16, 1983

Links to Additional Sources (8)

See any mistakes? Let us know!
  • Missing Person / NamUs #MP12125
  • 747DMCA - Robert Glenn Bennett - Doe Network
  • Robert Glenn Bennett - The Charley Project
  • 1983 murder case goes to jury - San Bernardino Sun
  • Justice, 25 years later - Press Telegram
  • Downey man arrested in 1983 slaying - Los Angeles Daily News
  • Stalled slaying case goes forward - Whittier Daily News
  • Suspect admitted to killing boss, witness testifies

    • 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.

    84%Moderate
    John Doe — Torrance, California
    UP4129 • Found Feb 22, 1987
    View case
    Sex ✓Male
    Age 100%Est. 55–65 vs 51 when missing
    Race 100%White
    Location 97%20 mi away, same county
    TimingFound 4 years after last seen
    Height 100%5'11" vs 5'10"
    Weight 100%185 lb vs 170 lb
    Hair 40%Gray vs Black
    Eyes 100%Blue vs Blue
    83%Moderate
    John Doe — Los Angeles, California
    UP4173 • Found Apr 19, 1986
    View case
    Sex ✓Male
    Age 100%Est. 45–58 vs 51 when missing
    Race 100%White
    Location 99%13 mi away, same county
    TimingFound 3 years after last seen
    Height 84%6'0" vs 5'10"
    Weight 100%165 lb vs 170 lb
    Hair 40%Gray vs Black
    Eyes 100%Blue vs Blue
    82%Moderate
    John Doe — Los Angeles, California
    UP3944 • Found Oct 16, 1989
    View case
    Sex ✓Male
    Age 100%Est. 49–54 vs 51 when missing
    Race 100%White
    Location 99%13 mi away, same county
    TimingFound 7 years after last seen
    Height 100%5'11" vs 5'10"
    Weight 100%156 lb vs 170 lb
    Hair 60%Brown vs Black
    Eyes 30%Hazel vs Blue
    82%Moderate
    John Doe — Redondo Beach, California - unidentified case UP3738
    John Doe — Redondo Beach, California
    UP3738 • Found Sep 5, 1987
    View case
    Sex ✓Male
    Age 85%Est. 40–60 vs 51 when missing
    Race 100%White
    Location 97%23 mi away, same county
    TimingFound 5 years after last seen
    Height 100%5'10"–6'3" vs 5'10"
    Weight 100%185 lb vs 170 lb
    Hair 60%Brown vs Black
    Eyes 100%Blue vs Blue
    82%Moderate
    John Doe — South Gate, California
    UP4158 • Found Aug 11, 1986
    View case
    Sex ✓Male
    Age 85%Est. 40–60 vs 51 when missing
    Race 100%White
    Location 100%10 mi away, same county
    TimingFound 3 years after last seen
    Height 100%5'10" vs 5'10"
    Weight 79%135 lb vs 170 lb
    Hair 100%Black vs Black
    82%Moderate
    John Doe — Los Angeles, California
    UP4174 • Found Apr 19, 1986
    View case
    Sex ✓Male
    Age 85%Est. 57–75 vs 51 when missing
    Race 100%White
    Location 99%13 mi away, same county
    TimingFound 3 years after last seen
    Height 100%5'10" vs 5'10"
    Weight 74%209 lb vs 170 lb
    Hair 60%Brown vs Black
    Eyes 100%Blue vs Blue
    81%Moderate
    John Doe — Los Angeles, California
    UP104480 • Found Mar 22, 2023
    View case
    Sex ✓Male
    Age 100%Est. 55–70 vs 51 when missing
    Race 100%White
    Location 99%14 mi away, same county
    TimingFound 40 years after last seen
    Height 100%5'6"–5'9" vs 5'10"
    Weight 100%180–190 lb vs 170 lb
    Hair 60%Brown vs Black
    Eyes 100%Blue vs Blue
    81%Moderate
    John Doe — Los Angeles, California - unidentified case UP72807
    John Doe — Los Angeles, California
    UP72807 • Found Feb 8, 1990
    View case
    Sex ✓Male
    Age 85%Est. 60–80 vs 51 when missing
    Race 100%White
    Location 99%13 mi away, same county
    TimingFound 7 years after last seen
    Height 100%5'10"–6'2" vs 5'10"
    Weight 96%140–150 lb vs 170 lb
    Hair 40%Gray vs Black
    Eyes 100%Blue vs Blue
    81%Moderate
    John Doe — Upland, California
    UP2574 • Found Mar 11, 1988
    View case
    Sex ✓Male
    Age 100%Est. 50–60 vs 51 when missing
    Race 100%White
    Location 96%23 mi away, same state
    TimingFound 5 years after last seen
    Height 100%5'10" vs 5'10"
    Weight 87%142 lb vs 170 lb
    Hair 60%Brown vs Black
    Eyes 30%Hazel vs Blue
    81%Moderate
    John Doe — Los Angeles, California
    UP4093 • Found Mar 4, 1988
    View case
    Sex ✓Male
    Age 100%Est. 55–65 vs 51 when missing
    Race 100%White
    Location 99%14 mi away, same county
    TimingFound 5 years after last seen
    Height 84%5'8" vs 5'10"
    Weight 58%120 lb vs 170 lb
    Hair 60%Brown vs Black
    Eyes 100%Blue vs Blue

    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)

    Robert Glenn Bennett, 51, was last seen on February 16, 1983, in Los Angeles while working as a... ...Read More
    06/24/2024

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