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 left abandoned on Otay Lakes Road with no keys? Who had access to it?
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timeline
Lead #2What occurred between November 20 and November 23 when the truck was discovered?
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location
Lead #3Why was the truck left at Otay Lakes Road specifically? Does this location have significance to Cosio or anyone he knew?
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.
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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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witness
Lead #4Were there any witnesses to Cosio leaving the construction site or anyone who saw the abandoned truck?
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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
Cosio leaves work
Miguel Carlos Cosio Jr. left his job at a Chula Vista construction site and never returned.
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1987-11-23
Truck found abandoned
Company truck discovered parked off the shoulder of Otay Lakes Road with no keys inside and no signs of struggle.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:November 20, 1987
Last Updated:July 15, 2026
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Phone: 6196915151
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Case Information
Incident:November 20, 1987
Last Updated:July 15, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 6196915151
You can remain anonymous