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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 (MP7847) and 10 other sources
On the evening of August 28, 1987, twenty-year-old Fabian Del Rosario was navigating the streets of Boulder, Colorado, in his brown 1979 Datsun 280ZX. A student at the University of Colorado, he had plans that were typical for a young man on a Friday night. At around 7:00 PM, he dropped off a friend in the vicinity of 30th Street and Colorado Avenue. His next stop was to pick up his girlfriend from her job when her shift ended at 7:30 PM. His friend later reported that everything seemed normal during their time together, and Fabian was in good spirits. However, Fabian never made it to his girlfriend's workplace and was never seen or heard from again.

The initial hours of his absence turned into days of growing concern for his loved ones. The situation took a grim turn in the early morning of August 31, 1987, three days after he was last seen. A Boulder police officer on a routine patrol discovered Fabian's Datsun 280ZX abandoned in the parking lot of the now-defunct Crossroads Mall, located near 30th Street and Walnut Avenue. The discovery of the vehicle, however, brought more questions than answers. Inside the passenger compartment of the car, a substantial amount of blood was found, transforming a missing person case into a sinister mystery.

Originally from Miami, Florida, Fabian Del Rosario was studying international business at the university. At the time of his disappearance, he was 5 feet 11 inches tall, weighed approximately 165 pounds, and had brown hair and brown eyes. The investigation into his disappearance uncovered that he may have been involved in drug distribution, specifically moving cocaine between Miami and Colorado. While authorities have considered this as a potential factor in his case, it remains unclear if it directly led to his disappearance. Foul play is suspected in what has become one of Boulder County's most enduring unsolved cases, leaving a family searching for answers and a community with a lingering sense of unease.

Last Seen: Aug 28, 1987

Possible Unidentified Matches (4)

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.

81%Moderate
John Doe — Fort Collins, Colorado - unidentified case UP454
John Doe — Fort Collins, Colorado
UP454 • Found Jul 12, 1997
View case
Sex ✓Male
Age 100%Est. 18–30 vs 20 when missing
Race 100%White
Location 91%43 mi away, same state
TimingFound 10 years after last seen
Height 100%5'11" vs 5'11"
Weight 100%160 lb vs 165 lb
Hair 100%Brown vs Brown
80%Moderate
John Doe — Denver, Colorado - unidentified case UP7173
John Doe — Denver, Colorado
UP7173 • Found Jan 8, 1997
View case
Sex ✓Male
Age 100%Est. 20–25 vs 20 when missing
Race 100%White
Location 97%22 mi away, same state
TimingFound 9 years after last seen
Height 52%5'7" vs 5'11"
Weight 100%160 lb vs 165 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
80%Moderate
John Doe — Fort Collins, Colorado - unidentified case UP4813
John Doe — Fort Collins, Colorado
UP4813 • Found Sep 16, 1994
View case
Sex ✓Male
Age 100%Est. 25–35 vs 20 when missing
Race 100%White
Location 91%43 mi away, same state
TimingFound 7 years after last seen
Height 84%5'9" vs 5'11"
Weight 90%140 lb vs 165 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
79%Possible
John Doe — Glendale, Colorado - unidentified case UP11476
John Doe — Glendale, Colorado
UP11476 • Found Feb 10, 1998
View case
Sex ✓Male
Age 100%Est. 25–30 vs 20 when missing
Race 100%White
Location 96%25 mi away, same state
TimingFound 10 years after last seen
Height 68%5'8" vs 5'11"
Weight 82%196 lb vs 165 lb
Hair 60%Black vs Brown
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.