Crime Solvers Central
Crime Solvers Central
298 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 (MP74763) and 1 other source
In the summer of 2015, a young man by the name of Sergio Alberto Lopez Montoya vanished under harrowing circumstances, leaving his loved ones in a state of perpetual uncertainty. At the age of 23, Sergio was last seen on August 6, 2015, as he embarked on a perilous journey from Mexico with the hope of crossing into the United States. His intended path was believed to be near Lukeville, Arizona, a route that would take him close to State Route 86. Since that day, no one has reported hearing from or seeing Sergio, and his case is being handled by the Phoenix Police Department. At the time of his disappearance, he was described as a Hispanic male, standing between five feet two and five feet three inches tall, and weighing between 150 and 160 pounds. He had brown hair and brown eyes.

Distinctive physical characteristics might have made Sergio identifiable, including a previously broken right wrist and a small scar on his torso. When he was last seen, he was wearing a belt that was adorned with a bull or longhorn design. The passage of time has only deepened the mystery surrounding his disappearance, as years have gone by without any substantial leads or information regarding his whereabouts. His family is left to grapple with the unknown, holding onto the hope that one day they will receive answers about what became of Sergio.

The investigation into Sergio's disappearance was officially recorded by the Phoenix Police Department on October 17, 2020, over five years after he was last seen. The circumstances of his case highlight the dangers faced by individuals attempting to cross the border and the profound impact these events have on families left behind. The lack of communication since August 6, 2015, paints a grim picture, yet the search for answers continues. This case serves as a somber reminder of the many individuals who go missing each year, leaving behind a void in the lives of those who knew and loved them. The overview of this case is one of a young man who disappeared while trying to cross into the United States from Mexico, with no contact having been made since his last sighting.

Last Seen: Aug 6, 2015

Links to Additional Sources (1)

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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.

81%Moderate
John Doe — South Mountain, Arizona - unidentified case UP67431
John Doe — South Mountain, Arizona
UP67431 • Found Mar 8, 2020
View case
Sex ✓Male
Age 100%Est. 16–30 vs 23 when missing
Race 100%Hispanic
Location 100%7 mi away, same state
TimingFound 5 years after last seen
Height 100%4'10"–5'2" vs 5'2"–5'3"
80%Moderate
John Doe — Phoenix, Arizona
UP106028 • Found Jun 21, 2023
View case
Sex ✓Male
Age 84%Est. 33–58 vs 23 when missing
Race 100%Hispanic
Location 100%4 mi away, same county
TimingFound 8 years after last seen
Height 100%5'4" vs 5'2"–5'3"
Weight 62%203 lb vs 150–160 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
79%Possible
John Doe — Arizona - unidentified case UP75357
John Doe — Arizona
UP75357 • Found Jul 24, 2020
View case
Sex ✓Male
Age 88%Est. 18–22 vs 23 when missing
Race 100%Hispanic
Location 83%70 mi away, same state
TimingFound 5 years after last seen
Height 100%5'4" vs 5'2"–5'3"
Weight 100%120–135 lb vs 150–160 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
79%Possible
John Doe — Ajo, Arizona - unidentified case UP15696
John Doe — Ajo, Arizona
UP15696 • Found Nov 8, 2015
View case
Sex ✓Male
Age 100%Est. 17–25 vs 23
Race 100%Hispanic
Location 79%87 mi away, same state
TimingFound 3 months after last seen
Height 100%5'2" vs 5'2"–5'3"
78%Possible
John Doe — Near Ajo, Arizona - unidentified case UP51289
John Doe — Near Ajo, Arizona
UP51289 • Found Feb 5, 2018
View case
Sex ✓Male
Age 100%Est. 25–40 vs 23 when missing
Race 100%Hispanic
Location 79%87 mi away, same state
TimingFound 3 years after last seen
Height 100%5'2"–5'6" vs 5'2"–5'3"
78%Possible
John Doe — Arizona - unidentified case UP15840
John Doe — Arizona
UP15840 • Found Nov 24, 2015
View case
Sex ✓Male
Age 100%Est. 19–25 vs 23
Race 100%Hispanic
Location 75%99 mi away, same state
TimingFound 4 months after last seen
Height 100%5'3" vs 5'2"–5'3"
77%Possible
John Doe — southwest of Picture Rocks, Arizona - unidentified case UP67780
John Doe — southwest of Picture Rocks, Arizona
UP67780 • Found Nov 13, 2019
View case
Sex ✓Male
Age 100%Est. 18–32 vs 23 when missing
Race 100%Hispanic
Location 78%90 mi away, same state
TimingFound 4 years after last seen
Height 100%5'0"–5'4" vs 5'2"–5'3"
77%Possible
John Doe — Near Ajo, Arizona - unidentified case UP54288
John Doe — Near Ajo, Arizona
UP54288 • Found Jul 23, 2018
View case
Sex ✓Male
Age 100%Est. 18–30 vs 23 when missing
Race 100%Hispanic
Location 79%87 mi away, same state
TimingFound 3 years after last seen
Height 100%5'2"–5'6" vs 5'2"–5'3"
77%Possible
John Doe — Arizona - unidentified case UP54315
John Doe — Arizona
UP54315 • Found Nov 8, 2017
View case
Sex ✓Male
Age 100%Est. 18–32 vs 23 when missing
Race 100%Hispanic
Location 75%99 mi away, same state
TimingFound 2 years after last seen
Height 100%5'0"–5'4" vs 5'2"–5'3"
76%Possible
John Doe — Ajo, Arizona - unidentified case UP121658
John Doe — Ajo, Arizona
UP121658 • Found Aug 22, 2023
View case
Sex ✓Male
Age 100%Est. 28–40 vs 23 when missing
Race 100%Hispanic
Location 79%87 mi away, same state
TimingFound 8 years after last seen
Height 100%5'0"–5'3" vs 5'2"–5'3"
Hair 60%Black 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.