Crime Solvers Central
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 (MP53539)
Carlos Martinez-Borja, age 29, was last seen on August 3, 2018, in San Antonio, Texas. He had been traveling with a group that included his sister when an alarming incident occurred. According to reports, his sister claimed that Carlos suddenly passed out, and foam was seen coming from his mouth. The exact location where this occurred, and the circumstances leading up to his disappearance, remain unclear. Despite the severity of the situation, no further information has been revealed about what happened afterward.

Carlos's case has been entered into missing person databases, including the Texas Department of Public Safety and the National Missing and Unidentified Persons System (NamUs), where authorities continue to seek leads. His family and investigators remain hopeful that additional information will come to light to aid in finding Carlos or understanding what happened to him. Anyone with knowledge about his case is urged to contact the San Antonio Police Department or relevant authorities.

This case highlights the urgency in missing person investigations, as even small details can prove critical to solving the mystery surrounding his disappearance.

Last Seen: Aug 3, 2018

Links to Additional Sources (0)

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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.

79%Possible
John Doe — Brackettville, Texas
UP93228 • Found Apr 23, 2022
View case
Sex ✓Male
Age 100%Est. 30–35 vs 29 when missing
Race 100%Hispanic
Location 72%116 mi away, same state
TimingFound 4 years after last seen
Height 100%5'3"–5'5" vs 5'5"–5'7"
Weight 95%140–170 lb vs 195–205 lb
Hair 100%Black vs Black
78%Possible
John Doe — Austin, Texas
UP132777 • Found Sep 29, 2024
View case
Sex ✓Male
Age 85%Est. 20–40 vs 29 when missing
Race 100%Hispanic
Location 82%74 mi away, same state
TimingFound 6 years after last seen
Height 84%5'9" vs 5'5"–5'7"
Weight 100%181 lb vs 195–205 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
77%Possible
John Doe — Austin, Texas
UP161776 • Found Jul 23, 2026
View case
Sex ✓Male
Age 85%Est. 20–40 vs 29 when missing
Race 100%Hispanic
Location 82%74 mi away, same state
TimingFound 8 years after last seen
Height 100%5'4" vs 5'5"–5'7"
Weight 52%132 lb vs 195–205 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
76%Possible
John Doe — Austin, Texas
UP143813 • Found May 1, 2025
View case
Sex ✓Male
Age 100%Est. 28–42 vs 29 when missing
Location 82%74 mi away, same state
TimingFound 7 years after last seen
Height 100%5'8" vs 5'5"–5'7"
Weight 100%219 lb vs 195–205 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
76%Possible
John Doe — Texas
UP137849 • Found Jan 14, 2022
View case
Sex ✓Male
Age 100%Est. 20–35 vs 29 when missing
Race 100%Hispanic
Location 72%115 mi away, same state
TimingFound 3 years after last seen
Height 100%5'3"–5'6" vs 5'5"–5'7"
75%Possible
John Doe — Mission, Texas
UP81370 • Found May 23, 2021
View case
Sex ✓Male
Age 100%Est. 16–29 vs 29 when missing
Race 100%Hispanic
Location 52%225 mi away, same state
TimingFound 3 years after last seen
Height 100%5'6" vs 5'5"–5'7"
Weight 92%167 lb vs 195–205 lb
Hair 100%Black vs Black
75%Possible
John Doe — Fort Worth, Texas
UP67514 • Found Feb 8, 2020
View case
Sex ✓Male
Age 85%Est. 30–50 vs 29 when missing
Race 100%Hispanic
Location 51%236 mi away, same state
TimingFound 18 months after last seen
Height 100%5'7" vs 5'5"–5'7"
Weight 85%160 lb vs 195–205 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
75%Possible
John Doe — Texas
UP76887 • Found Jan 10, 2019
View case
Sex ✓Male
Age 100%Est. 19–29 vs 29
Race 100%Hispanic
Location 62%166 mi away, same state
TimingFound 5 months after last seen
Height 100%5'3"–5'7" vs 5'5"–5'7"

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.