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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 (MP40021) and 2 other sources
In the early summer of 1999, a young man named Luis Alonso Jimenez-Villalobos, just 23 years old, vanished from his life in Mesa, Arizona. On June 14th of that year, he was seen for the last time, and then, without a trace or explanation, he was gone. The specific details of where he was, who he might have been with, or what he was doing in those final moments before he disappeared remain unknown, leaving a painful void for those who knew him. Luis, a Hispanic and Caucasian male, stood between five feet and six feet tall, with a build that could range from 130 to 180 pounds. He had black hair and brown eyes, and a small but distinct scar over his left eyebrow, a unique feature on a face that has now been missing for decades.

The passage of time has done little to unravel the mystery of what happened to Luis, who was also known by the nickname 'Flaco'. Despite the creation of a NamUs case file, years after he was last seen, the circumstances surrounding his disappearance are starkly brief and uninformative. The official record simply states that he was last seen in Mesa on that June day. There is no public information available regarding the clothes he was wearing, whether he had any personal belongings with him, or if he had any plans or appointments. This lack of information has made the search for answers incredibly difficult for both law enforcement and his family, leaving only speculation and unanswered questions in the place of facts.

The investigation into Luis Alonso Jimenez-Villalobos's disappearance is a cold case, a term that speaks to the years of silence and the absence of new leads. The Mesa Police Department has a record of his case, but without new information, the trail has grown cold. The official file was created many years after he vanished, and it is unclear what, if any, initial investigation took place. The overview of this case is one of profound uncertainty. A young man in the prime of his life disappeared without a known reason, leaving behind a legacy of questions. His case is a somber reminder of the many individuals who go missing each year, and the enduring pain and lack of closure that their families must carry.

Last Seen: Jun 14, 1999

Links to Additional Sources (2)

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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.

86%Strong
John Doe — Phoenix, Arizona - unidentified case UP2059
John Doe — Phoenix, Arizona
UP2059 • Found Jul 24, 2002
View case
Sex ✓Male
Age 100%Est. 17–30 vs 23 when missing
Race 100%White
Location 99%14 mi away, same county
TimingFound 3 years after last seen
Height 100%5'8" vs 5'0"–6'0"
Weight 86%206 lb vs 130–180 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
86%Strong
John Doe — Arizona - unidentified case UP1977
John Doe — Arizona
UP1977 • Found Nov 10, 2001
View case
Sex ✓Male
Age 100%Est. 25–40 vs 23 when missing
Race 100%White
Location 93%36 mi away, same county
TimingFound 2 years after last seen
Height 100%5'5" vs 5'0"–6'0"
Weight 100%123 lb vs 130–180 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
86%Strong
John Doe — Phoenix, Arizona - unidentified case UP1964
John Doe — Phoenix, Arizona
UP1964 • Found Oct 26, 1999
View case
Sex ✓Male
Age 100%Est. 20–30 vs 23
Race 100%White
Location 97%21 mi away, same county
TimingFound 4 months after last seen
Height 100%5'6" vs 5'0"–6'0"
Weight 100%178 lb vs 130–180 lb
Hair 60%Brown vs Black
Eyes 100%Brown vs Brown
86%Strong
John Doe — Chandler, Arizona - unidentified case UP1958
John Doe — Chandler, Arizona
UP1958 • Found Aug 17, 1999
View case
Sex ✓Male
Age 85%Est. 20–40 vs 23
Race 100%White
Location 100%8 mi away, same county
TimingFound 2 months after last seen
Height 100%5'4" vs 5'0"–6'0"
Weight 100%165 lb vs 130–180 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
85%Strong
John Doe — Phoenix, Arizona - unidentified case UP815
John Doe — Phoenix, Arizona
UP815 • Found Jul 5, 2007
View case
Sex ✓Male
Age 100%Est. 28–38 vs 23 when missing
Race 100%White
Location 98%17 mi away, same county
TimingFound 8 years after last seen
Height 100%5'3" vs 5'0"–6'0"
Weight 100%125 lb vs 130–180 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
85%Strong
John Doe — Phoenix, Arizona - unidentified case UP824
John Doe — Phoenix, Arizona
UP824 • Found Dec 28, 2005
View case
Sex ✓Male
Age 100%Est. 17–30 vs 23 when missing
Race 100%White
Location 98%17 mi away, same county
TimingFound 7 years after last seen
Height 100%5'7" vs 5'0"–6'0"
Weight 100%156 lb vs 130–180 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
85%Strong
John Doe — Phoenix, Arizona - unidentified case UP1974
John Doe — Phoenix, Arizona
UP1974 • Found Jun 19, 2001
View case
Sex ✓Male
Age 88%Est. 18–22 vs 23 when missing
Race 100%White
Location 98%19 mi away, same county
TimingFound 2 years after last seen
Height 100%5'7" vs 5'0"–6'0"
Weight 100%130 lb vs 130–180 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
85%Strong
John Doe — Mesa, Arizona - unidentified case UP1970
John Doe — Mesa, Arizona
UP1970 • Found Jan 30, 2001
View case
Sex ✓Male
Age 85%Est. 20–40 vs 23 when missing
Race 100%White
Location 100%2 mi away, same county
TimingFound 20 months after last seen
Height 100%5'4" vs 5'0"–6'0"
Weight 100%155 lb vs 130–180 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
84%Moderate
John Doe — Laveen, Arizona - unidentified case UP2028
John Doe — Laveen, Arizona
UP2028 • Found Nov 23, 2003
View case
Sex ✓Male
Age 100%Est. 20–35 vs 23 when missing
Race 100%White
Location 97%20 mi away, same county
TimingFound 4 years after last seen
Height 100%6'0" vs 5'0"–6'0"
Weight 99%196 lb vs 130–180 lb
Hair 60%Brown vs Black
Eyes 100%Brown vs Brown
84%Moderate
John Doe — Arizona - unidentified case UP2046
John Doe — Arizona
UP2046 • Found Nov 18, 2002
View case
Sex ✓Male
Age 100%Est. 25–35 vs 23 when missing
Race 100%White
Location 93%36 mi away, same county
TimingFound 3 years after last seen
Height 100%5'2" vs 5'0"–6'0"
Weight 100%191 lb vs 130–180 lb
Hair 60%Brown vs Black
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.