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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 (MP15997) and 2 other sources
In the vast and often harsh landscape of the Arizona desert, a story of uncertainty began to unfold on June 29, 2007. On that day, a 30-year-old man named Sergio Flores Aviles was last seen in the small border community of Sasabe. Details surrounding his presence in that specific location remain unclear, adding another layer of complexity to his sudden disappearance. Known also by the names Jose Flores, Alfonso Villa Palafox, and Adolfo Palafox, Sergio’s case is a collection of fragmented information, leaving his loved ones with more questions than answers. At the time he went missing, he was described as being between 5'3' and 5'5' tall and weighing between 170 and 190 pounds. His case is managed by the Pima County Office of the Medical Examiner, a detail that underscores the serious concerns for his welfare from the very beginning.

The investigation into Sergio's disappearance has been hampered by a lack of concrete leads and specific details about his last known activities. The circumstances of his disappearance are officially listed as unknown. Among the few identifying details available to authorities are distinctive tattoos and a scar. He has a tattoo on his left shoulder of a heart complete with devil horns and a tail. Additionally, a large scar is present on one of his temples. When he vanished, it is believed he may have been carrying a birth certificate. The scarcity of further information paints a challenging picture for investigators, who are left to piece together a puzzle with many missing pieces.

The passage of time has not brought clarity to the fate of Sergio Flores Aviles. His case remains an open wound for those who knew him, a narrative without a final chapter. The official record, managed by the Pima County Office of the Medical Examiner under case number FSC MPR 584, is a testament to the ongoing effort to find him. The lack of resolution in his case highlights the ambiguous and often painful reality for families of the missing, who are left to navigate a world of what-ifs and unanswered prayers. The overview of this case is one of profound ambiguity, a man who seemingly vanished near the US-Mexico border, leaving behind only a handful of physical descriptors and a void in the lives of those who await his return.

Last Seen: Jun 29, 2007

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.

87%Strong
John Doe — Amado and Tubac, Arizona - unidentified case UP5152
John Doe — Amado and Tubac, Arizona
UP5152 • Found Nov 29, 2007
View case
Sex ✓Male
Age 100%Est. 25–39 vs 30
Race 100%Hispanic
Location 95%30 mi away, same state
TimingFound 5 months after last seen
Height 84%5'7" vs 5'3"–5'5"
Physical features: Tattoo: heart
86%Strong
John Doe — Tucson, Arizona - unidentified case UP6743
John Doe — Tucson, Arizona
UP6743 • Found Dec 15, 2007
View case
Sex ✓Male
Age 100%Est. 29–43 vs 30
Race 100%Hispanic
Location 86%61 mi away, same county
TimingFound 6 months after last seen
Height 84%5'7" vs 5'3"–5'5"
Weight 92%145 lb vs 170–190 lb
Physical features: Tattoo: heart
84%Moderate
John Doe — Stanfield, Arizona - unidentified case UP5133
John Doe — Stanfield, Arizona
UP5133 • Found Aug 13, 2008
View case
Sex ✓Male
Age 100%Est. 28–40 vs 30 when missing
Race 100%Hispanic
Location 75%99 mi away, same state
TimingFound 14 months after last seen
Height 100%5'3" vs 5'3"–5'5"
Physical features: Tattoo: heart
83%Moderate
John Doe — Sasabe, Arizona - unidentified case UP5332
John Doe — Sasabe, Arizona
UP5332 • Found Dec 26, 2007
View case
Sex ✓Male
Age 100%Est. 30–40 vs 30
Race 100%Hispanic
Location 100%Same area, same county
TimingFound 6 months after last seen
Height 100%5'3" vs 5'3"–5'5"
83%Moderate
John Doe — Sasabe, Arizona - unidentified case UP5590
John Doe — Sasabe, Arizona
UP5590 • Found Nov 14, 2007
View case
Sex ✓Male
Age 100%Est. 22–36 vs 30
Race 100%Hispanic
Location 100%Same area, same county
TimingFound 5 months after last seen
Height 100%5'6" vs 5'3"–5'5"
82%Moderate
John Doe — Arivaca, Arizona - unidentified case UP8711
John Doe — Arivaca, Arizona
UP8711 • Found Aug 19, 2010
View case
Sex ✓Male
Age 100%Est. 28–38 vs 30 when missing
Race 100%Hispanic
Location 99%14 mi away, same county
TimingFound 3 years after last seen
Height 100%5'5" vs 5'3"–5'5"
82%Moderate
John Doe — Gunsight, Arizona - unidentified case UP4924
John Doe — Gunsight, Arizona
UP4924 • Found Jun 24, 2008
View case
Sex ✓Male
Age 100%Est. 30–45 vs 30
Race 100%Hispanic
Location 93%37 mi away, same county
TimingFound 12 months after last seen
Height 100%5'4" vs 5'3"–5'5"
82%Moderate
John Doe — Sasabe, Arizona - unidentified case UP5076
John Doe — Sasabe, Arizona
UP5076 • Found Feb 25, 2008
View case
Sex ✓Male
Age 100%Est. 30–40 vs 30
Race 100%Hispanic
Location 100%Same area, same county
TimingFound 8 months after last seen
Height 84%5'7" vs 5'3"–5'5"
82%Moderate
John Doe — Tubac, Arizona - unidentified case UP5335
John Doe — Tubac, Arizona
UP5335 • Found Nov 11, 2007
View case
Sex ✓Male
Age 100%Est. 25–35 vs 30
Race 100%Hispanic
Location 95%30 mi away, same state
TimingFound 4 months after last seen
Height 100%5'5" vs 5'3"–5'5"
81%Moderate
John Doe — Cowlic, Tohono O'Odham Nation, Arizona - unidentified case UP12076 View case
Sex ✓Male
Age 100%Est. 25–36 vs 30 when missing
Race 100%Hispanic
Location 94%34 mi away, same county
TimingFound 6 years after last seen
Height 100%5'4" vs 5'3"–5'5"
Weight 82%136 lb vs 170–190 lb

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.