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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 (MP86769)
Michael Lawrence Mondini, a 22-year-old from San Francisco, California, was last seen on December 31, 1979. According to reports, he was residing at an apartment on 22nd Street in San Francisco at the time. Michael's disappearance occurred under unclear circumstances, and after being last seen, no further communication or sightings were confirmed. His family, particularly the younger generation, has been trying to locate him, but very little information has surfaced.

Interestingly, there are conflicting accounts regarding the timeline of his disappearance. Some family members recall his last contact as occurring in early January 1985 when Michael mentioned getting a job with a chemical company. However, this was strange, as he had no background in that field. After this, one of his friends reportedly found Michael’s motor scooter abandoned at the San Francisco Airport, but no further details emerged.

Over time, some family members found possible indications of Michael being alive in the mid-1990s, but these were likely due to a family member mistakenly using his Social Security number, rather than actual sightings. Despite their efforts, the family continues to search for answers, and Michael's case remains unsolved after several decades.

Last Seen: Dec 31, 1979

Links to Additional Sources (0)

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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.

86%Strong
John Doe — San Francisco, California
UP5872 • Found Oct 16, 1981
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Sex ✓Male
Age 100%Est. 20–30 vs 22 when missing
Race 100%White
Location 100%2 mi away, same county
TimingFound 22 months after last seen
Height 100%5'10" vs 5'11"
Weight 73%153 lb vs 200 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
84%Moderate
John Doe — Oakland, California
UP54081 • Found Dec 12, 1986
View case
Sex ✓Male
Age 100%Est. 25–40 vs 22 when missing
Race 100%White
Location 100%9 mi away, same state
TimingFound 7 years after last seen
Height 84%5'9" vs 5'11"
Weight 100%219 lb vs 200 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
84%Moderate
John Doe — Sacramento, California
UP2404 • Found May 12, 1982
View case
Sex ✓Male
Age 100%Est. 20–30 vs 22 when missing
Race 100%White
Location 90%46 mi away, same state
TimingFound 2 years after last seen
Height 100%5'10" vs 5'11"
Weight 63%145 lb vs 200 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
82%Moderate
John Doe — San Martin, California
UP123466 • Found Apr 13, 1986
View case
Sex ✓Male
Age 100%Est. 18–32 vs 22 when missing
Race 100%White
Location 85%64 mi away, same state
TimingFound 6 years after last seen
Height 100%5'10" vs 5'11"
Weight 75%155 lb vs 200 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
82%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 22 when missing
Race 100%White
Location 100%12 mi away, same state
TimingFound 5 years after last seen
Height 100%5'10" vs 5'11"
Weight 52%137 lb vs 200 lb
Hair 100%Brown vs Brown
82%Moderate
John Doe — San Francisco, California
UP5935 • Found Jan 18, 1993
View case
Sex ✓Male
Age 100%Est. 30–45 vs 22 when missing
Race 100%White
Location 100%2 mi away, same county
TimingFound 13 years after last seen
Height 100%5'10" vs 5'11"
Weight 85%165 lb vs 200 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
82%Moderate
John Doe — San Francisco, California
UP5905 • Found Nov 30, 1984
View case
Sex ✓Male
Age 85%Est. 18–35 vs 22 when missing
Race 100%White
Location 100%2 mi away, same county
TimingFound 5 years after last seen
Height 100%5'11" vs 5'11"
Weight 52%137 lb vs 200 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
82%Moderate
View case
Sex ✓Male
Age 85%Est. 20–40 vs 22 when missing
Race 100%White
Location 100%5 mi away, same state
TimingFound 4 years after last seen
Height 100%5'10" vs 5'11"
Weight 100%180 lb vs 200 lb
Hair 100%Brown vs Brown
81%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 22 when missing
Race 100%White
Location 95%30 mi away, same state
TimingFound 18 years after last seen
Height 84%5'9" vs 5'11"
Weight 90%170 lb vs 200 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
81%Moderate
John Doe — Sausalito, California
UP7082 • Found Aug 21, 2007
View case
Sex ✓Male
Age 100%Est. 25–35 vs 22 when missing
Race 100%White
Location 100%8 mi away, same state
TimingFound 28 years after last seen
Height 100%5'10" vs 5'11"
Weight 80%160 lb vs 200 lb
Hair 100%Brown vs Brown
Eyes 60%Hazel 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.

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