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 (MP7726) and 4 other sources
In the late summer of 2007, a family's life was irrevocably changed when 29-year-old Bronson Leo Guillen vanished from Tucson, Arizona. His loved ones last spoke with him on September 18, 2007, a conversation that gave no hint of his impending disappearance. There was no indication that he planned to leave. The following day, September 19, marked the last known activity from Bronson when he rented a U-Haul vehicle. He was never seen or heard from again. Complicating the mystery, Bronson left behind his own two vehicles, suggesting his departure may not have been planned as a long-term absence.

The U-Haul truck Bronson rented was discovered abandoned on September 24, 2007, offering no clues as to his whereabouts. At the time of his disappearance, Bronson was described as a Hispanic male with brown hair and brown eyes, standing at 5'8' to 5'9' and weighing between 155 and 165 pounds. His hair was styled in a short 'buzz' cut, and he had a mustache. He has several distinct tattoos: the name 'GUILLEN' across his upper back, praying hands on his left chest, 'E.S.' on his left calf, and 'B.P.' on his right calf. He was known to wear a gold bracelet adorned with different saints. While the specific clothing he was wearing on the day he disappeared is unknown, he typically wore extra-large t-shirts, pants with a 36 to 38-inch waist, and size 9 1/2 shoes.

The circumstances surrounding Bronson Guillen's disappearance remain an unsolved puzzle. Despite the passage of time, his case is still classified as a missing person case, leaving his family with unanswered questions and a profound sense of loss. The Tucson Police Department continues to list him as missing and encourages anyone with information to come forward. The lack of available details in his case has made the search for answers particularly challenging for both law enforcement and his loved ones. His family continues to hope for a resolution, holding onto the memory of the man they knew and loved. The investigation into what happened to Bronson Guillen in September of 2007 is ongoing.

Last Seen: Sep 19, 2007

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 — Tucson, Arizona - unidentified case UP8671
John Doe — Tucson, Arizona
UP8671 • Found Jan 25, 2010
View case
Sex ✓Male
Age 100%Est. 20–29 vs 29 when missing
Race 60%Hispanic
Location 100%6 mi away, same county
TimingFound 2 years after last seen
Height 100%5'8" vs 5'8"–5'9"
Weight 100%155 lb vs 155–165 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
80%Moderate
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 29
Race 60%Hispanic
Location 100%6 mi away, same county
TimingFound 3 months after last seen
Height 100%5'7" vs 5'8"–5'9"
Weight 100%145 lb vs 155–165 lb
Hair 60%Black vs Brown
79%Possible
John Doe — Laveen, Arizona - unidentified case UP6601
John Doe — Laveen, Arizona
UP6601 • Found Nov 22, 2009
View case
Sex ✓Male
Age 100%Est. 30–45 vs 29 when missing
Race 100%White
Location 74%107 mi away, same state
TimingFound 2 years after last seen
Height 100%5'8" vs 5'8"–5'9"
Weight 100%142 lb vs 155–165 lb
78%Possible
John Doe — Tucson, Arizona - unidentified case UP158804
John Doe — Tucson, Arizona
UP158804 • Found Dec 14, 2025
View case
Sex ✓Male
Age 95%Est. 48–62 vs 29 when missing
Race 100%White
Location 100%5 mi away, same county
TimingFound 18 years after last seen
Height 100%5'4"–5'8" vs 5'8"–5'9"
77%Possible
John Doe — Eloy, Arizona
UP97199 • Found Jan 16, 2022
View case
Sex ✓Male
Age 100%Est. 23–34 vs 29 when missing
Race 100%White
Location 89%52 mi away, same state
TimingFound 14 years after last seen
Height 100%5'4"–5'9" vs 5'8"–5'9"
77%Possible
John Doe — Winterhaven, California
UP12609 • Found Oct 6, 2008
View case
Sex ✓Male
Age 100%Est. 18–30 vs 29 when missing
Race 100%White
Location 53%221 mi away
TimingFound 13 months after last seen
Height 100%5'8" vs 5'8"–5'9"
Weight 100%180 lb vs 155–165 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
76%Possible
John Doe — Tucson, Arizona - unidentified case UP102760
John Doe — Tucson, Arizona
UP102760 • Found Feb 9, 2023
View case
Sex ✓Male
Age 85%Est. 45–70 vs 29 when missing
Race 100%White
Location 100%5 mi away, same county
TimingFound 15 years after last seen
Height 100%5'4"–5'10" vs 5'8"–5'9"
76%Possible
John Doe — Stanfield, Arizona - unidentified case UP10911
John Doe — Stanfield, Arizona
UP10911 • Found Dec 4, 2012
View case
Sex ✓Male
Age 93%Est. 35–50 vs 29 when missing
Race 100%White
Location 82%76 mi away, same state
TimingFound 5 years after last seen
Height 100%5'9" vs 5'8"–5'9"
76%Possible
John Doe — Winterhaven, California
UP12608 • Found Sep 11, 2008
View case
Sex ✓Male
Age 85%Est. 18–35 vs 29
Race 100%White
Location 53%221 mi away
TimingFound 12 months after last seen
Height 100%5'10" vs 5'8"–5'9"
Weight 100%180 lb vs 155–165 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
76%Possible
John Doe — Arizona - unidentified case UP9434
John Doe — Arizona
UP9434 • Found Jan 22, 2008
View case
Sex ✓Male
Age 85%Est. 25–44 vs 29
Race 100%White
Location 86%62 mi away, same state
TimingFound 4 months after last seen
Height 84%5'6" vs 5'8"–5'9"

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.