Crime Solvers Central
Crime Solvers Central
298 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

Any updates on this case? Let us know!
Summary based on the NamUs case record (MP16528) and 1 other source
On a summer day in 2010, a 27-year-old man named Diego Tum Cotiy vanished while attempting to cross the border into the United States. The last time his family ever heard from him was on June 9th of that year when he called them from Altar, Sonora, a known staging area for migrants in Mexico. He told them he would be crossing the following day, June 10th. He was traveling from his home in Guatemala with the hope of making a new life. After that final phone call, the line went silent, and his family was left with a void of unanswered questions and the heavy weight of uncertainty. Diego was described as a Hispanic male, standing between 5 feet 2 inches and 5 feet 4 inches tall, and weighing between 140 and 160 pounds. He had black hair and black eyes. A distinguishing feature was a burn scar on his right foot. When he was last seen, he was wearing blue jeans, a gray short-sleeved shirt, a beige and black leather belt, and black low boots. He was also carrying a beige backpack filled with his clothing.

The days that followed his expected crossing turned into a distressing wait for his family. With no word from Diego, the hope of his safe arrival began to fade, replaced by a growing sense of dread. The journey from Altar, Sonora, across the Arizona desert is notoriously perilous, fraught with dangers ranging from the harsh natural elements to the risk of encountering criminal organizations. For countless families, the dream of a better life turns into a nightmare in this unforgiving landscape. The Pima County Medical Examiner's Office in Tucson, Arizona, eventually became the investigating agency for Diego's case, a common occurrence for disappearances in this border region. This office handles a tragically high number of cases involving unidentified remains of presumed migrants who have succumbed to the brutal conditions of the desert.

The silence from Diego Tum Cotiy has now stretched over many years, leaving his case unresolved. The Pima County Medical Examiner's Office, along with national databases for missing persons, holds onto the details of his case, hoping for a breakthrough that might one day provide answers to his waiting family. The circumstances of his disappearance highlight the human side of the complex issues surrounding migration, where individuals with hopes and families can disappear without a trace in the vast and dangerous borderlands. The overview of this case is one of profound loss and lingering questions, a story shared by many families whose loved ones have vanished while seeking a different future.

Last Seen: Jun 10, 2010

Links to Additional Sources (1)

See any mistakes? Let us know!

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.

84%Moderate
John Doe — South Tucson, Arizona - unidentified case UP12008
John Doe — South Tucson, Arizona
UP12008 • Found May 9, 2013
View case
Sex ✓Male
Age 85%Est. 18–35 vs 27 when missing
Race 100%Hispanic
Location 100%2 mi away, same county
TimingFound 3 years after last seen
Height 100%5'4" vs 5'2"–5'4"
Weight 100%133 lb vs 140–160 lb
Hair 100%Black vs Black
Eyes 90%Brown vs Black
83%Moderate
John Doe — Cowlic, Tohono O'Odham Nation, Arizona - unidentified case UP12076 View case
Sex ✓Male
Age 100%Est. 25–36 vs 27 when missing
Race 100%Hispanic
Location 85%64 mi away, same county
TimingFound 3 years after last seen
Height 100%5'4" vs 5'2"–5'4"
Weight 100%136 lb vs 140–160 lb
Hair 100%Black vs Black
Eyes 90%Brown vs Black
83%Moderate
John Doe — Near Big Field Village, Arizona - unidentified case UP11595
John Doe — Near Big Field Village, Arizona
UP11595 • Found May 8, 2013
View case
Sex ✓Male
Age 85%Est. 25–45 vs 27 when missing
Race 100%Hispanic
Location 92%40 mi away, same county
TimingFound 3 years after last seen
Height 100%5'4" vs 5'2"–5'4"
Weight 99%176 lb vs 140–160 lb
Hair 100%Black vs Black
Eyes 90%Brown vs Black
83%Moderate
John Doe — Papago, Arizona - unidentified case UP9196
John Doe — Papago, Arizona
UP9196 • Found Jul 23, 2011
View case
Sex ✓Male
Age 100%Est. 20–35 vs 27 when missing
Race 100%Hispanic
Location 88%55 mi away, same state
TimingFound 13 months after last seen
Height 100%5'5" vs 5'2"–5'4"
Hair 100%Black vs Black
Eyes 90%Brown vs Black
82%Moderate
John Doe — San Simon, Arizona - unidentified case UP8741
John Doe — San Simon, Arizona
UP8741 • Found Sep 28, 2010
View case
Sex ✓Male
Age 100%Est. 23–32 vs 27
Race 100%Hispanic
Location 100%8 mi away, same county
TimingFound 4 months after last seen
Height 84%5'6" vs 5'2"–5'4"
82%Moderate
John Doe — Marana, Arizona - unidentified case UP8606
John Doe — Marana, Arizona
UP8606 • Found Sep 17, 2010
View case
Sex ✓Male
Age 75%Est. 30–45 vs 27
Race 100%Hispanic
Location 97%22 mi away, same county
TimingFound 3 months after last seen
Height 100%5'5" vs 5'2"–5'4"
Weight 100%126 lb vs 140–160 lb
Hair 100%Black vs Black
82%Moderate
John Doe — Topawa, Arizona - unidentified case UP8737
John Doe — Topawa, Arizona
UP8737 • Found Jul 13, 2010
View case
Sex ✓Male
Age 100%Est. 25–35 vs 27
Race 100%Hispanic
Location 88%55 mi away, same county
TimingFound 5 weeks after last seen
Height 100%5'5" vs 5'2"–5'4"
Hair 100%Black vs Black
81%Moderate
John Doe — Arizona - unidentified case UP13034
John Doe — Arizona
UP13034 • Found Jun 25, 2014
View case
Sex ✓Male
Age 100%Est. 25–40 vs 27 when missing
Race 100%Hispanic
Location 92%40 mi away, same county
TimingFound 4 years after last seen
Height 100%5'3" vs 5'2"–5'4"
Hair 100%Black vs Black
81%Moderate
John Doe — Robles Junction, Arizona - unidentified case UP12298
John Doe — Robles Junction, Arizona
UP12298 • Found Feb 16, 2014
View case
Sex ✓Male
Age 100%Est. 21–30 vs 27 when missing
Race 100%Hispanic
Location 97%20 mi away, same county
TimingFound 4 years after last seen
Height 100%5'4" vs 5'2"–5'4"
81%Moderate
John Doe — Nogales, Arizona - unidentified case UP10775
John Doe — Nogales, Arizona
UP10775 • Found May 12, 2012
View case
Sex ✓Male
Age 100%Est. 25–39 vs 27 when missing
Race 100%Hispanic
Location 87%58 mi away, same state
TimingFound 23 months after last seen
Height 100%5'4" vs 5'2"–5'4"
Hair 100%Black vs Black

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.