Crime Solvers Central
Crime Solvers Central
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 (MP7725) and 4 other sources
Mark Johnson, a 26-year-old man, was last seen on March 1, 1997, in San Diego, California. He left home around 2:00 a.m., and after that, he was never seen again. His girlfriend reported him missing, as he failed to return or make any contact. Mark was known to frequently visit Tijuana, Mexico, and there was speculation that he may have traveled there before his disappearance. However, no confirmed sightings or leads have emerged since that time.

Mark was described as a white male, approximately 5'10" tall, weighing 155 pounds, with brown hair. Despite efforts to locate him, his case remains unsolved. Authorities continue to investigate his disappearance and urge anyone with information to come forward.

His case is still listed in databases like NamUs, and his family continues to seek closure and answers regarding his fate.

Last Seen: Mar 1, 1997

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.

83%Moderate
John Doe — San Diego, California
UP56199 • Found May 3, 2000
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Sex ✓Male
Age 85%Est. 20–40 vs 26 when missing
Race 100%White
Location 100%Same area, same county
TimingFound 3 years after last seen
Height 100%6'1" vs 5'10"–6'0"
Weight 100%162–182 lb vs 155–160 lb
Hair 100%Brown vs Brown
83%Moderate
John Doe — San Diego, California
UP56918 • Found Oct 2, 1997
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Sex ✓Male
Age 100%Est. 25–40 vs 26
Race 100%White
Location 97%21 mi away, same county
TimingFound 7 months after last seen
Height 100%5'6"–5'10" vs 5'10"–6'0"
82%Moderate
John Doe — San Diego, California - unidentified case UP133256
John Doe — San Diego, California
UP133256 • Found Nov 3, 2024
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Sex ✓Male
Age 100%Est. 50–60 vs 26 when missing
Race 100%White
Location 100%2 mi away, same county
TimingFound 28 years after last seen
Height 100%5'9" vs 5'10"–6'0"
Weight 87%129 lb vs 155–160 lb
Hair 100%Brown vs Brown
Eyes 100%Blue vs Blue
80%Moderate
John Doe — Ocotillo, California
UP13535 • Found Sep 4, 2001
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Sex ✓Male
Age 100%Est. 20–35 vs 26 when missing
Race 100%White
Location 84%68 mi away, same state
TimingFound 5 years after last seen
Height 100%5'9" vs 5'10"–6'0"
Weight 100%165 lb vs 155–160 lb
Hair 60%Black vs Brown
80%Moderate
John Doe — Jacumba, California
UP56631 • Found Jun 3, 1999
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Sex ✓Male
Age 100%Est. 28–42 vs 26 when missing
Race 100%White
Location 87%57 mi away, same county
TimingFound 2 years after last seen
Height 100%5'11"–6'2" vs 5'10"–6'0"
79%Possible
John Doe — Spring Valley, California - unidentified case UP56665
John Doe — Spring Valley, California
UP56665 • Found Jan 2, 1999
View case
Sex ✓Male
Age 88%Est. 15–25 vs 26 when missing
Race 100%White
Location 100%10 mi away, same county
TimingFound 22 months after last seen
Height 52%5'6" vs 5'10"–6'0"
Weight 100%166 lb vs 155–160 lb
Hair 100%Brown vs Brown
79%Possible
John Doe — Holtville, California
UP15236 • Found Jul 28, 1998
View case
Sex ✓Male
Age 88%Est. 20–25 vs 26 when missing
Race 100%White
Location 74%104 mi away, same state
TimingFound 17 months after last seen
Height 100%5'9" vs 5'10"–6'0"
Weight 100%165 lb vs 155–160 lb
Hair 100%Brown vs Brown
79%Possible
John Doe — Calexico, California - unidentified case UP13227
John Doe — Calexico, California
UP13227 • Found May 10, 2000
View case
Sex ✓Male
Age 100%Est. 18–30 vs 26 when missing
Race 100%White
Location 76%97 mi away, same state
TimingFound 3 years after last seen
Height 100%5'10" vs 5'10"–6'0"
Weight 100%140 lb vs 155–160 lb
Hair 100%Brown vs Brown
Eyes 0%Brown vs Blue
79%Possible
John Doe — South El Monte, California
UP3396 • Found May 7, 1999
View case
Sex ✓Male
Age 100%Est. 28–43 vs 26 when missing
Race 100%White
Location 74%106 mi away, same state
TimingFound 2 years after last seen
Height 100%5'10" vs 5'10"–6'0"
Weight 100%145 lb vs 155–160 lb
Hair 100%Brown vs Brown
Eyes 0%Brown vs Blue
78%Possible
John Doe — San Diego, California
UP110722 • Found Aug 19, 2023
View case
Sex ✓Male
Age 100%Est. 40–50 vs 26 when missing
Race 100%White
Location 100%8 mi away, same county
TimingFound 26 years after last seen
Height 100%5'8"–5'9" vs 5'10"–6'0"

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.