Crime Solvers Central
Crime Solvers Central
302 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.
Gerebel Guzman Mancillas ~ missing person case profile photo

Gerebel Guzman Mancillas ~ Missing Person Case

Last seen in Rio Bravo, Texas on Sep 1, 2009

Create Press Release
Create Social Post
Create Flyer

Victim Details

Aug 24, 2015

Aug 7, 2018

Gerebel

Guzman Mancillas ~

57

40

58 inches

59 inches

220 lbs

230 lbs

Hispanic / Latino

Male

Sep 1, 2009

Rio Bravo

Texas

Hidalgo County

5756

Brooks County Sheriffs Office

Falfurrias

Texas

Brooks County

78355

Benny Martinez

Sheriff

701 East Rice Street, Texas

3613253696

County

Law Enforcement

http://www.co.brooks.tx.us/default.aspx?Brooks_County/Sheriff

15-08-24-001 MP

May 20, 2015

Brooks County Sheriffs Office

Gray or Partially Gray

Brown

Brown

Oct 3, 2026


Area Last Seen:

Case Description

Any updates on this case? Let us know!
Summary based on the NamUs case record (MP29954) and 1 other source
Gerebel Guzman Mancillas, a 40-year-old male, was last seen on September 1, 2009, while attempting to cross from Rio Bravo, Tamaulipas, into Texas. Mancillas, who was traveling alone at the time, disappeared under unclear circumstances, and he has not been heard from since late September 2009. Described as Hispanic, with gray or partially gray hair, he stood 5'8" tall and weighed around 220 pounds at the time of his disappearance.

Mancillas’ case remains unsolved, and authorities are still searching for information that could help locate him or provide answers about his disappearance. His case is part of the ongoing investigations managed by the Texas Department of Public Safety, which continues to encourage the public to provide any tips or leads that could assist in resolving his case.
Last Seen: Sep 1, 2009

Links to Additional Sources (1)

See any mistakes? Let us know!
  • Missing Person / NamUs

    • 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.

    80%Moderate
    John Doe — Texas - unidentified case UP12582
    John Doe — Texas
    UP12582 • Found Jun 9, 2012
    View case
    Sex ✓Male
    Age 100%Est. 35–50 vs 40 when missing
    Race 100%Hispanic
    Location 92%39 mi away, same state
    TimingFound 3 years after last seen
    Height 100%5'0" vs 4'10"–4'11"
    78%Possible
    John Doe — Texas - unidentified case UP17654
    John Doe — Texas
    UP17654 • Found Jun 9, 2014
    View case
    Sex ✓Male
    Age 89%Est. 25–39 vs 40 when missing
    Race 100%Hispanic
    Location 92%39 mi away, same state
    TimingFound 5 years after last seen
    Height 100%4'11" vs 4'10"–4'11"
    77%Possible
    John Doe — Texas - unidentified case UP82518
    John Doe — Texas
    UP82518 • Found Aug 4, 2016
    View case
    Sex ✓Male
    Age 85%Est. 25–43 vs 40 when missing
    Race 100%Hispanic
    Location 94%34 mi away, same state
    TimingFound 7 years after last seen
    Height 100%5'0"–5'5" vs 4'10"–4'11"
    77%Possible
    John Doe — Falfurrias, Texas - unidentified case UP12474
    John Doe — Falfurrias, Texas
    UP12474 • Found Sep 14, 2012
    View case
    Sex ✓Male
    Age 85%Est. 25–44 vs 40 when missing
    Race 100%Hispanic
    Location 88%53 mi away, same state
    TimingFound 3 years after last seen
    Height 100%4'9"–5'1" vs 4'10"–4'11"
    76%Possible
    John Doe — Texas - unidentified case UP69844
    John Doe — Texas
    UP69844 • Found Jan 8, 2019
    View case
    Sex ✓Male
    Age 85%Est. 29–53 vs 40 when missing
    Race 100%Hispanic
    Location 92%39 mi away, same state
    TimingFound 9 years after last seen
    Height 100%4'11"–5'5" vs 4'10"–4'11"
    76%Possible
    John Doe — San Carlos, Texas
    UP14507 • Found Oct 25, 2015
    View case
    Sex ✓Male
    Age 100%Est. 40–50 vs 40 when missing
    Race 60%White
    Location 99%15 mi away, same county
    TimingFound 6 years after last seen
    Height 68%5'2" vs 4'10"–4'11"
    Weight 100%200 lb vs 220–230 lb
    Hair 40%Black vs Gray
    Eyes 100%Brown vs Brown
    75%Possible
    John Doe — Texas
    UP85709 • Found Oct 20, 2021
    View case
    Sex ✓Male
    Age 85%Est. 24–40 vs 40 when missing
    Race 100%Hispanic
    Location 92%39 mi away, same state
    TimingFound 12 years after last seen
    Height 100%5'0"–5'5" vs 4'10"–4'11"
    75%Possible
    John Doe — Texas - unidentified case UP58604
    John Doe — Texas
    UP58604 • Found Jan 5, 2018
    View case
    Sex ✓Male
    Age 85%Est. 28–45 vs 40 when missing
    Race 100%Hispanic
    Location 89%49 mi away, same state
    TimingFound 8 years after last seen
    Height 100%4'11"–5'4" vs 4'10"–4'11"
    75%Possible
    John Doe — Texas - unidentified case UP97007
    John Doe — Texas
    UP97007 • Found Jul 6, 2017
    View case
    Sex ✓Male
    Race 100%Hispanic
    Location 92%39 mi away, same state
    TimingFound 8 years after last seen
    Height 100%5'0"–5'2" vs 4'10"–4'11"
    Weight 65%150–160 lb vs 220–230 lb
    Hair 40%Brown vs Gray
    Eyes 100%Brown vs Brown
    Name: same last name as tentative name (Jose Martin De Leon Guzman)
    75%Possible
    John Doe — Texas
    UP13472 • Found May 23, 2013
    View case
    Sex ✓Male
    Age 100%Est. 30–40 vs 40 when missing
    Race 100%Hispanic
    Location 90%49 mi away, same state
    TimingFound 4 years after last seen

    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.

    Latest News

    View All

    Forum Posts (1)

    Gerebel Guzman Mancillas, 40, was last seen September 1, 2009, while attempting to cross from Rio... ...Read More
    11/11/2023

    Other Missing Cases from Rio Bravo, Texas

    Jose Sedano Posadas missing person case in Rio Bravo, Texas

    Jose Sedano Posadas

    Missing: Apr 2, 2008
    José María Sedano Posadas, aged 23, was last seen on April 2, 2008, when he left his home in Rio ...Read More