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Mark Kechely Missing Person Case

Last seen in Mill Valley, California on Dec 25, 1983

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Victim Details

Aug 17, 2011

Jan 12, 2024

Mark

Kechely

67

25

70 inches

200 lbs

White / Caucasian

Male

Dec 25, 1983

Mill Valley

California

Marin County

94941

10627

Marin County Sheriff's Office

San Rafael

California

Marin County

94903

1600 Los Gamos Drive #200, California

4154737250

County

Law Enforcement

https://www.marinsheriff.org/

SO84-0047

Marin County Sheriff's Office

Brown

Blue

Blue

Oct 12, 2026


Area Last Seen:

Case Description

Any updates on this case? Let us know!
Summary based on the NamUs case record (MP12014) and 2 other sources
Mark Kechely, 25, was last seen on December 25, 1983, in Mill Valley, California. His case remains unsolved, with little information available about the circumstances surrounding his disappearance. At the time of his disappearance, he had scars on his wrists and left knee. Despite the passage of time, his case is still listed in missing persons databases, and authorities continue to seek any information that could help resolve his case. Anyone with details is encouraged to come forward to aid in the investigation.
Last Seen: Dec 25, 1983

Links to Additional Sources (2)

See any mistakes? Let us know!
  • Missing Person / NamUs #MP12014
  • Mark Kechely | International Missing Persons Wiki - Fandom

    • 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 — Berkeley, California - unidentified case UP53302
    John Doe — Berkeley, California
    UP53302 • Found Mar 19, 1985
    View case
    Sex ✓Male
    Age 100%Est. 20–30 vs 25 when missing
    Race 100%White
    Location 99%15 mi away, same state
    TimingFound 15 months after last seen
    Height 100%5'10" vs 5'10"
    Weight 52%137 lb vs 200 lb
    Hair 100%Brown vs Brown
    84%Moderate
    John Doe — Unincorporated - Brisbane, California
    UP9683 • Found Mar 6, 1984
    View case
    Sex ✓Male
    Age 85%Est. 20–40 vs 25
    Race 100%White
    Location 98%17 mi away, same state
    TimingFound 2 months after last seen
    Height 100%5'10" vs 5'10"
    Weight 100%180 lb vs 200 lb
    Hair 100%Brown vs Brown
    83%Moderate
    John Doe — Oakland, California
    UP54081 • Found Dec 12, 1986
    View case
    Sex ✓Male
    Age 100%Est. 25–40 vs 25 when missing
    Race 100%White
    Location 98%17 mi away, same state
    TimingFound 3 years after last seen
    Height 100%5'9" vs 5'10"
    Weight 100%219 lb vs 200 lb
    Hair 100%Brown vs Brown
    Eyes 0%Brown vs Blue
    81%Moderate
    John Doe — San Francisco, California
    UP5901 • Found Jan 19, 1984
    View case
    Sex ✓Male
    Age 85%Est. 18–35 vs 25
    Race 100%White
    Location 100%11 mi away, same state
    TimingFound 4 weeks after last seen
    Height 84%5'8" vs 5'10"
    Hair 100%Brown vs Brown
    80%Moderate
    John Doe — California - unidentified case UP17689
    John Doe — California
    UP17689 • Found May 10, 1998
    View case
    Sex ✓Male
    Age 100%Est. 20–30 vs 25 when missing
    Race 100%White
    Location 98%17 mi away, same county
    TimingFound 14 years after last seen
    Height 100%5'9" vs 5'10"
    Weight 90%170 lb vs 200 lb
    Hair 100%Brown vs Brown
    Eyes 0%Brown vs Blue
    80%Moderate
    John Doe — Sausalito, California
    UP7082 • Found Aug 21, 2007
    View case
    Sex ✓Male
    Age 100%Est. 25–35 vs 25 when missing
    Race 100%White
    Location 100%5 mi away, same county
    TimingFound 24 years after last seen
    Height 100%5'10" vs 5'10"
    Weight 80%160 lb vs 200 lb
    Hair 100%Brown vs Brown
    Eyes 30%Hazel vs Blue
    80%Moderate
    John Doe — Sausalito, California - unidentified case UP7083
    John Doe — Sausalito, California
    UP7083 • Found Dec 12, 2006
    View case
    Sex ✓Male
    Age 100%Est. 17–25 vs 25 when missing
    Race 100%White
    Location 100%5 mi away, same county
    TimingFound 23 years after last seen
    Height 84%5'8" vs 5'10"
    Weight 90%170 lb vs 200 lb
    Hair 60%Black vs Brown
    Eyes 100%Blue vs Blue
    80%Moderate
    John Doe — San Francisco, California
    UP5935 • Found Jan 18, 1993
    View case
    Sex ✓Male
    Age 100%Est. 30–45 vs 25 when missing
    Race 100%White
    Location 100%11 mi away, same state
    TimingFound 9 years after last seen
    Height 100%5'10" vs 5'10"
    Weight 85%165 lb vs 200 lb
    Hair 60%Black vs Brown
    Eyes 0%Brown vs Blue
    80%Moderate
    John Doe — San Francisco, California
    UP5927 • Found Oct 2, 1989
    View case
    Sex ✓Male
    Age 85%Est. 30–50 vs 25 when missing
    Race 100%White
    Location 100%11 mi away, same state
    TimingFound 6 years after last seen
    Height 84%6'0" vs 5'10"
    Weight 100%205 lb vs 200 lb
    Hair 100%Brown vs Brown
    80%Moderate
    John Doe — San Francisco, California
    UP5905 • Found Nov 30, 1984
    View case
    Sex ✓Male
    Age 85%Est. 18–35 vs 25
    Race 100%White
    Location 100%11 mi away, same state
    TimingFound 11 months after last seen
    Height 100%5'11" vs 5'10"
    Weight 52%137 lb vs 200 lb
    Hair 100%Brown vs Brown
    Eyes 0%Brown 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)

    Mark Kechely was 25 when he was last seen on December 25, 1983, in Mill Valley, California. Few... ...Read More
    11/15/2024

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