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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 (MP20268) and 4 other sources
Alex Donaldo Aguilar-Vasquez, aged 28, was last seen on September 1, 2008, in San Mateo, California. At the time, he contacted his mother from Reynosa, Tamaulipas, a Mexican border town, informing her of his intention to cross into the United States and then reach California, where he would call her again. However, after that call, Alex never made contact with his family, and no further information has emerged about his whereabouts.

He is described as a Hispanic male, standing about 5'3" and weighing between 140 and 150 pounds, with black hair and brown eyes. He may have used the names Fernando Manuel Aguilar Vasquez or Donaldo Aguilar Vasquez. Despite ongoing investigations by the San Mateo Police Department, little information has surfaced about the circumstances of his disappearance.

Anyone with information about Alex's case is encouraged to contact local authorities to aid in solving this long-standing missing person case.

Last Seen: Sep 1, 2008

Possible Unidentified Matches (8)

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.

82%Moderate
John Doe — Oakland, California
UP160748 • Found Jul 7, 2022
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Sex ✓Male
Age 100%Est. 18–32 vs 28 when missing
Race 100%Hispanic
Location 99%14 mi away, same state
TimingFound 14 years after last seen
Height 100%5'3" vs 5'3"–5'4"
Weight 100%132 lb vs 140–150 lb
Eyes 100%Brown vs Brown
80%Moderate
John Doe — Salinas, California
UP131069 • Found Mar 20, 2023
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Sex ✓Male
Age 100%Est. 38–52 vs 28 when missing
Race 100%Hispanic
Location 83%73 mi away, same state
TimingFound 15 years after last seen
Height 100%5'2" vs 5'3"–5'4"
Weight 88%117 lb vs 140–150 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
79%Possible
John Doe — Manteca, California
UP116767 • Found Feb 21, 2024
View case
Sex ✓Male
Age 100%Est. 38–52 vs 28 when missing
Race 100%Hispanic
Location 85%63 mi away, same state
TimingFound 15 years after last seen
Height 100%5'5" vs 5'3"–5'4"
Weight 92%170 lb vs 140–150 lb
Hair 100%Black vs Black
77%Possible
John Doe — Watsonville, California - unidentified case UP14242
John Doe — Watsonville, California
UP14242 • Found Sep 9, 2010
View case
Sex ✓Male
Age 100%Est. 20–30 vs 28 when missing
Race 100%Hispanic
Location 88%56 mi away, same state
TimingFound 2 years after last seen
Hair 100%Black vs Black
75%Possible
John Doe — Fresno, California
UP109069 • Found Aug 17, 2022
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Sex ✓Male
Age 100%Est. 27–36 vs 28 when missing
Race 100%Hispanic
Location 65%151 mi away, same state
TimingFound 14 years after last seen
Height 100%5'5" vs 5'3"–5'4"
Weight 94%121 lb vs 140–150 lb
Hair 100%Black vs Black
75%Possible
John Doe — Patterson, California
UP58416 • Found May 10, 2019
View case
Sex ✓Male
Age 100%Est. 25–40 vs 28 when missing
Race 100%Hispanic
Location 85%65 mi away, same state
TimingFound 11 years after last seen
Height 75%5'4"–6'0" vs 5'3"–5'4"
Hair 100%Black vs Black
75%Possible
John Doe — Wilton, California - unidentified case UP16897
John Doe — Wilton, California
UP16897 • Found Apr 2, 2012
View case
Sex ✓Male
Age 85%Est. 25–45 vs 28 when missing
Race 60%White
Location 80%83 mi away, same state
TimingFound 4 years after last seen
Height 100%5'5" vs 5'3"–5'4"
Weight 100%151 lb vs 140–150 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
75%Possible
John Doe — Compton, California
UP10299 • Found Dec 26, 2011
View case
Sex ✓Male
Age 100%Est. 20–28 vs 28 when missing
Race 100%Hispanic
Location 41%343 mi away, same state
TimingFound 3 years after last seen
Height 100%5'5"–5'9" vs 5'3"–5'4"
Weight 100%163 lb vs 140–150 lb
Hair 100%Black vs Black
Eyes 100%Brown 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.

Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.