The person at the center of this case
Miguel Carlos Cosio Jr.
Missing Person · Open
38 years waiting · since 1987
Missing Person: Miguel Carlos Cosio Jr.
Justice for Miguel Carlos Cosio Jr. — the trail went cold in 1987, but the truth hasn't.
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Key leads to think about
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vehicle
Lead #1Why was the company truck parked on Otay Lakes Road with no keys? Did someone else drive it there?
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location
Lead #2What is the significance of Otay Lakes Road to the case? Were there any witnesses in that area?
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timeline
Lead #3What happened during the three-day gap between Cosio leaving work and the truck being discovered?
Miguel Carlos Cosio Jr., a 22-year-old construction worker, disappeared on November 20, 1987, after leaving his job at a Chula Vista construction site. Three days later, authorities discovered the company truck he had driven parked along Otay Lakes Road with no keys inside and no signs of struggle. Nearly four decades later, the circumstances of his disappearance remain unexplained, and investigators continue to seek information about what happened to him that day.
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More leads to consider
Beyond the top three above — each detail below could be the thread that pulls this case open.
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evidence
Lead #4Were there any forensic findings in or around the abandoned truck that could explain his disappearance?
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Even the smallest detail could be the key to solving this case.
Official wording
Source Narrative
NamUs case MP35774. Missing person: Miguel Carlos Cosio Jr..
Last known contact: 1987-11-20 in Chula Vista, San Diego, CA. Circumstances: Cosio left his job at a Chula Vista, California construction site and never came back.
Three days later, authorities found the company truck he drove away in, parked off the shoulder of Otay Lakes Road. There were no keys inside and no sign of a struggle.
Demographics: 22 years, Male, Hispanic / Latino. Physical description: 5 ft 8 in, 150 lbs, hair: Brown, eyes: Brown.
Clothing and accessories: Clothing: Roel Construction t-shirt, Levi jeans; Footwear: Tan work boots. Investigating agency: Chula Vista Police Department | C87-14833.
Timeline of Events
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1987-11-20
Miguel Cosio Jr. disappears
Cosio left his job at a Chula Vista construction site and never returned.
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1987-11-23
Company truck discovered
The truck Cosio drove away in was found parked off the shoulder of Otay Lakes Road with no keys inside and no sign of struggle.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:November 20, 1987
Last Updated:June 15, 2026
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Any information, no matter how small, could be crucial to solving this case.
Phone: 6196915151
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Case Information
Incident:November 20, 1987
Last Updated:June 15, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 6196915151
You can remain anonymous