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Mark Andreasen Missing Person Case

Last seen in South Lake Tahoe, California on Oct 1, 1982

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Victim Details

Apr 15, 2024

Apr 17, 2024

Mark

Andreasen

70

26

71 inches

180 lbs

White / Caucasian

Male

Oct 1, 1982

South Lake Tahoe

California

El Dorado County

No

140910

South Lake Tahoe Police Department

South Lake Tahoe

California

El Dorado County

96150

1352 Johnson Boulevard, California

5305426100

Local

Law Enforcement

http://www.cityofslt.us/302/Police

87-141008

Dec 10, 1986

South Lake Tahoe Police Department

Brown

Blue

Blue

Oct 16, 2026


Area Last Seen:

Case Description

Any updates on this case? Let us know!
Summary based on the NamUs case record (MP120151) and 3 other sources
Mark Andreasen, aged 26, was last seen on October 1, 1982, in South Lake Tahoe, California. At the time of his disappearance, few details were available regarding the circumstances surrounding his case. His case is still classified as a missing person investigation, and there has been no substantial progress in uncovering what happened to him. Mark was described as a white male with brown hair and blue eyes. His last known location was on Apache Avenue in South Lake Tahoe.

Despite ongoing investigations, Mark's whereabouts remain a mystery. The case has remained cold for many years, and authorities continue to request public assistance in hopes of finding new leads.
Last Seen: Oct 1, 1982

Links to Additional Sources (3)

See any mistakes? Let us know!
  • Missing Person / NamUs #MP120151
  • 1963 Statutes of Nevada, Pages 1393-1467 - Nevada Legislature
  • Newsroom: Sac State Stories | Sacramento State

    • 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.

    79%Possible
    John Doe — Reno, Nevada
    UP8426 • Found Aug 7, 1993
    View case
    Sex ✓Male
    Age 99%Est. 37–45 vs 26 when missing
    Race 100%White
    Location 92%42 mi away
    TimingFound 11 years after last seen
    Height 100%5'11" vs 5'11"
    Hair 100%Brown vs Brown
    78%Possible
    John Doe — Nevada - unidentified case UP7622
    John Doe — Nevada
    UP7622 • Found Oct 21, 1995
    View case
    Sex ✓Male
    Age 100%Est. 28–38 vs 26 when missing
    Race 100%White
    Location 92%39 mi away
    TimingFound 13 years after last seen
    Height 100%5'10" vs 5'11"
    77%Possible
    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 26 when missing
    Race 100%White
    Location 66%145 mi away, same state
    TimingFound 2 years after last seen
    Height 100%5'10" vs 5'11"
    Weight 72%137 lb vs 180 lb
    Hair 100%Brown vs Brown
    76%Possible
    John Doe — Reno, Nevada - unidentified case UP17321
    John Doe — Reno, Nevada
    UP17321 • Found Nov 20, 2017
    View case
    Sex ✓Male
    Age 100%Est. 60 vs 26 when missing
    Race 100%White
    Location 91%44 mi away
    TimingFound 35 years after last seen
    Height 68%5'8" vs 5'11"
    Weight 84%148 lb vs 180 lb
    Hair 70%Gray vs Brown
    Eyes 100%Blue vs Blue
    76%Possible
    John Doe — Sausalito, California
    UP17718 • Found Sep 9, 1990
    View case
    Sex ✓Male
    Age 91%Est. 35–45 vs 26 when missing
    Race 100%White
    Location 64%155 mi away, same state
    TimingFound 8 years after last seen
    Height 100%5'11" vs 5'11"
    Weight 98%160 lb vs 180 lb
    Hair 100%Brown vs Brown
    Eyes 70%Gray vs Blue
    76%Possible
    John Doe — San Martin, California
    UP123466 • Found Apr 13, 1986
    View case
    Sex ✓Male
    Age 100%Est. 18–32 vs 26 when missing
    Race 100%White
    Location 64%156 mi away, same state
    TimingFound 4 years after last seen
    Height 100%5'10" vs 5'11"
    Weight 92%155 lb vs 180 lb
    Hair 100%Brown vs Brown
    Eyes 0%Brown vs Blue
    76%Possible
    John Doe — Reno, Nevada
    UP7626 • Found May 5, 1996
    View case
    Sex ✓Male
    Age 85%Est. 25–45 vs 26 when missing
    Race 100%White
    Location 92%42 mi away
    TimingFound 14 years after last seen
    Height 84%5'9" vs 5'11"
    Weight 100%170 lb vs 180 lb
    Hair 70%Gray vs Brown
    76%Possible
    John Doe — Sacramento, California
    UP2399 • Found Feb 20, 1986
    View case
    Sex ✓Male
    Age 85%Est. 30–50 vs 26 when missing
    Race 100%White
    Location 79%85 mi away, same state
    TimingFound 3 years after last seen
    Height 84%6'1" vs 5'11"
    Weight 87%210 lb vs 180 lb
    Hair 100%Brown vs Brown
    76%Possible
    John Doe — Unincorporated - Brisbane, California
    UP9683 • Found Mar 6, 1984
    View case
    Sex ✓Male
    Age 85%Est. 20–40 vs 26 when missing
    Race 100%White
    Location 63%158 mi away, same state
    TimingFound 17 months after last seen
    Height 100%5'10" vs 5'11"
    Weight 100%180 lb vs 180 lb
    Hair 100%Brown vs Brown
    76%Possible
    John Doe — Floriston, California
    UP7426 • Found Jan 6, 1984
    View case
    Sex ✓Male
    Age 85%Est. 25–45 vs 26 when missing
    Race 100%White
    Location 94%31 mi away, same state
    TimingFound 15 months after last seen
    Height 75%5'6"–6'2" vs 5'11"

    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 Andreasen was 26 when he was last seen on October 1, 1982, in South Lake Tahoe, California. His... ...Read More
    06/14/2024

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