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 (MP1079) and 2 other sources
In the early morning hours of October 28, 2001, in Phoenix, Arizona, a 34-year-old man named Guillermo Monge Perez vanished from his trailer home. Known to his friends and family by the nicknames El Toro and Memo, Perez was last seen at approximately 3:30 a.m. in the vicinity of 67th Avenue, between Van Buren and Buckeye. Just before he disappeared, he told a neighbor that there was a woman inside his home who would not leave. Since that conversation, Guillermo Perez has not been seen or heard from again. At the time of his disappearance, he was wearing a green shirt, green pants, and brown work boots.

Guillermo is a Hispanic male who speaks only Spanish. He has black hair and brown eyes. Distinguishing features include scars on his left elbow and on both of his legs. He stood between 5 feet 7 inches and 5 feet 9 inches tall and weighed between 150 and 170 pounds. His case was created with the National Missing and Unidentified Persons System on December 12, 2008.

The circumstances surrounding Guillermo's disappearance remain unclear, and few details are available in his case. The Phoenix Police Department is the investigating agency, and they can be contacted for any information regarding this case. The lack of new information over the years has left his family with unanswered questions. The case of Guillermo Perez is a somber reminder of the many individuals who go missing each year, leaving behind loved ones to grapple with uncertainty and hope for a resolution.

Last Seen: Oct 28, 2001

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.

82%Moderate
John Doe — Apache Junction, Arizona - unidentified case UP6490
John Doe — Apache Junction, Arizona
UP6490 • Found May 2, 2002
View case
Sex ✓Male
Age 85%Est. 26–44 vs 34
Race 100%Hispanic
Location 95%30 mi away, same state
TimingFound 6 months after last seen
Height 100%5'9" vs 5'7"–5'9"
Weight 63%106 lb vs 150–170 lb
Hair 100%Black vs Black
81%Moderate
John Doe — Phoenix, Arizona - unidentified case UP819
John Doe — Phoenix, Arizona
UP819 • Found Aug 2, 2007
View case
Sex ✓Male
Age 100%Est. 35–50 vs 34 when missing
Race 60%White
Location 100%5 mi away, same county
TimingFound 6 years after last seen
Height 100%5'9" vs 5'7"–5'9"
Weight 100%155 lb vs 150–170 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
81%Moderate
John Doe — Phoenix, Arizona - unidentified case UP2034
John Doe — Phoenix, Arizona
UP2034 • Found Jul 27, 2003
View case
Sex ✓Male
Age 100%Est. 35–45 vs 34 when missing
Race 100%Hispanic
Location 100%Same area, same county
TimingFound 21 months after last seen
Height 68%6'0" vs 5'7"–5'9"
Hair 100%Black vs Black
80%Moderate
John Doe — Casa Grande, Arizona - unidentified case UP4938
John Doe — Casa Grande, Arizona
UP4938 • Found Sep 24, 2007
View case
Sex ✓Male
Age 85%Est. 35–55 vs 34 when missing
Race 100%Hispanic
Location 92%41 mi away, same state
TimingFound 6 years after last seen
Height 100%5'8" vs 5'7"–5'9"
Weight 81%119 lb vs 150–170 lb
Hair 60%Brown vs Black
Eyes 100%Brown vs Brown
80%Moderate
John Doe — Little Tucson Village, Arizona - unidentified case UP6532
John Doe — Little Tucson Village, Arizona
UP6532 • Found Jun 5, 2003
View case
Sex ✓Male
Age 100%Est. 23–35 vs 34 when missing
Race 100%Hispanic
Location 74%105 mi away, same state
TimingFound 19 months after last seen
Height 100%5'8" vs 5'7"–5'9"
Weight 76%115 lb vs 150–170 lb
Hair 100%Black vs Black
80%Moderate
John Doe — Arizona - unidentified case UP1977
John Doe — Arizona
UP1977 • Found Nov 10, 2001
View case
Sex ✓Male
Age 100%Est. 25–40 vs 34
Race 60%White
Location 96%23 mi away, same county
TimingFound 13 days after last seen
Height 84%5'5" vs 5'7"–5'9"
Weight 86%123 lb vs 150–170 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
79%Possible
John Doe — Maricopa, Arizona - unidentified case UP8769
John Doe — Maricopa, Arizona
UP8769 • Found Sep 18, 2010
View case
Sex ✓Male
Age 100%Est. 35–45 vs 34 when missing
Race 100%Hispanic
Location 95%27 mi away, same state
TimingFound 9 years after last seen
Height 100%5'7" vs 5'7"–5'9"
79%Possible
John Doe — Casa Grande, Arizona - unidentified case UP6369
John Doe — Casa Grande, Arizona
UP6369 • Found Jul 22, 2009
View case
Sex ✓Male
Age 100%Est. 28–40 vs 34 when missing
Race 100%Hispanic
Location 92%41 mi away, same state
TimingFound 8 years after last seen
Height 100%5'6" vs 5'7"–5'9"
79%Possible
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 34 when missing
Race 100%Hispanic
Location 74%106 mi away, same state
TimingFound 6 years after last seen
Height 100%5'7" vs 5'7"–5'9"
Weight 100%145 lb vs 150–170 lb
Hair 100%Black vs Black
79%Possible
John Doe — Vaya Chin, Arizona - unidentified case UP5395
John Doe — Vaya Chin, Arizona
UP5395 • Found Jul 26, 2006
View case
Sex ✓Male
Age 100%Est. 22–36 vs 34 when missing
Race 100%Hispanic
Location 81%77 mi away, same state
TimingFound 5 years after last seen
Height 100%5'6" vs 5'7"–5'9"
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.