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Sergio Avalos Missing Person Case

Last seen in Brownsville, Texas on Jun 11, 2014

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Victim Details

Jun 11, 2015

Mar 22, 2021

Sergio

Avalos

53

41

66 inches

67 inches

160 lbs

Hispanic / Latino

Male

Jun 11, 2014

Brownsville

Texas

Cameron County

Unknown

16791

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

15-06-11-001MP

Brooks County Sheriffs Office

Black

Brown

Brown

Oct 7, 2026


Area Last Seen:

Case Description

Any updates on this case? Let us know!
Summary based on the NamUs case record (MP29043) and 3 other sources
Sergio Avalos, a 41-year-old man, was last seen on June 11, 2014, while traveling with a group of approximately 20 people crossing from Reynosa, Tamaulipas, Mexico, into the United States near Brownsville, Texas. The group made their way to McAllen, where they stayed for a few days before being handed over to a new guide. During their journey, Sergio sent a text message to his brother-in-law, explaining that he believed the group was halfway to their final destination in Houston and had one more day of walking.

The group reportedly encountered a checkpoint on Highway 77, though it's unclear which one. After this, Sergio went missing, and no further communication was received from him. His family has been searching for answers since his disappearance, but little information has emerged. His case is listed in missing person databases, including NamUs, where efforts continue to locate him. If you have any information about Sergio's whereabouts, authorities encourage you to report any leads.
Last Seen: Jun 11, 2014

Links to Additional Sources (3)

See any mistakes? Let us know!
  • Missing Person / NamUs #MP29043
  • Missing Children Data from NAMUS website - GitHubのGist
  • [XLS] April 2018 - Hidalgo County

    • 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.

    85%Strong
    John Doe — Brownsville, Texas - unidentified case UP127601
    John Doe — Brownsville, Texas
    UP127601 • Found Jun 18, 2024
    View case
    Sex ✓Male
    Age 100%Est. 38–52 vs 41 when missing
    Race 100%Hispanic
    Location 100%8 mi away, same county
    TimingFound 10 years after last seen
    Height 100%5'8" vs 5'6"–5'7"
    Weight 100%160 lb vs 160 lb
    Hair 100%Black vs Black
    Eyes 100%Brown vs Brown
    81%Moderate
    John Doe — Brownsville, Texas
    UP12970 • Found May 15, 2014
    View case
    Sex ✓Male
    Age 100%Est. 28–42 vs 41
    Race 60%White
    Location 100%Same area, same county
    TimingFound same day as last seen
    Height 100%5'5" vs 5'6"–5'7"
    Weight 95%180 lb vs 160 lb
    Hair 100%Black vs Black
    80%Moderate
    John Doe — South Padre Island, Texas - unidentified case UP15278
    John Doe — South Padre Island, Texas
    UP15278 • Found Dec 27, 2015
    View case
    Sex ✓Male
    Age 100%Est. 38–52 vs 41 when missing
    Location 96%25 mi away, same county
    TimingFound 19 months after last seen
    Height 100%5'8" vs 5'6"–5'7"
    Weight 100%150 lb vs 160 lb
    Hair 100%Black vs Black
    79%Possible
    John Doe — Texas - unidentified case UP71301
    John Doe — Texas
    UP71301 • Found Jun 19, 2020
    View case
    Sex ✓Male
    Age 100%Est. 38–52 vs 41 when missing
    Race 100%Hispanic
    Location 81%80 mi away, same state
    TimingFound 6 years after last seen
    Height 100%5'6"–5'10" vs 5'6"–5'7"
    Weight 100%160–180 lb vs 160 lb
    79%Possible
    John Doe — Texas - unidentified case UP82071
    John Doe — Texas
    UP82071 • Found Jun 5, 2018
    View case
    Sex ✓Male
    Age 85%Est. 30–51 vs 41 when missing
    Race 100%Hispanic
    Location 98%16 mi away, same county
    TimingFound 4 years after last seen
    Height 100%5'3"–5'7" vs 5'6"–5'7"
    79%Possible
    John Doe — Texas - unidentified case UP53236
    John Doe — Texas
    UP53236 • Found Jan 10, 2018
    View case
    Sex ✓Male
    Age 85%Est. 19–42 vs 41 when missing
    Race 100%Hispanic
    Location 98%16 mi away, same county
    TimingFound 4 years after last seen
    Height 100%5'3"–5'8" vs 5'6"–5'7"
    79%Possible
    John Doe — Texas
    UP79905 • Found Jan 6, 2018
    View case
    Sex ✓Male
    Age 85%Est. 27–46 vs 41 when missing
    Race 100%Hispanic
    Location 98%16 mi away, same county
    TimingFound 4 years after last seen
    Height 100%5'3"–5'7" vs 5'6"–5'7"
    79%Possible
    John Doe — Brownsville, Texas
    UP15339 • Found Apr 15, 2016
    View case
    Sex ✓Male
    Age 100%Est. 28–42 vs 41 when missing
    Location 100%Same area, same county
    TimingFound 22 months after last seen
    Height 68%5'3" vs 5'6"–5'7"
    Weight 100%160 lb vs 160 lb
    Hair 100%Black vs Black
    Eyes 100%Brown vs Brown
    78%Possible
    John Doe — Texas
    UP107455 • Found Aug 8, 2023
    View case
    Sex ✓Male
    Age 100%Est. 28–42 vs 41 when missing
    Race 100%Hispanic
    Location 90%49 mi away, same state
    TimingFound 9 years after last seen
    Height 84%5'4" vs 5'6"–5'7"
    Weight 51%109 lb vs 160 lb
    Hair 100%Black vs Black
    78%Possible
    John Doe — Pharr, Texas - unidentified case UP92174
    John Doe — Pharr, Texas
    UP92174 • Found May 16, 2022
    View case
    Sex ✓Male
    Age 100%Est. 38–52 vs 41 when missing
    Race 100%Hispanic
    Location 90%47 mi away, same state
    TimingFound 8 years after last seen
    Height 84%5'4" vs 5'6"–5'7"
    Weight 56%112 lb vs 160 lb
    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.

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    Forum Posts (1)

    Sergio Avalos was 41 when he was last seen on June 11, 2014, while traveling with a group of about... ...Read More
    08/05/2024

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