Rio Grande Valley Friends and Families of Murdered Children

Proudly Introduces the RIO PROJECT COLD CASE HOMICIDE DATABASE: A Regional Initiative to Spotlight Unsolved Murders and Amplify the Voices of Victims and Their Families

The Rio Grande Valley Families and Friends of Murdered Children (RGV-FFOMC) is honored to announce the launch of the Rio Project Cold Case Homicide Database—a first-of-its-kind initiative designed to centralize and bring public attention to unsolved homicide cases throughout the Rio Grande Valley. This comprehensive and publicly accessible database will be a powerful tool for elevating awareness, supporting grieving families, and encouraging renewed investigative efforts.

Phase I – County Coverage:
The initial rollout will include unsolved homicide cases submitted from the following four counties:
  • Hidalgo County
  • Cameron County
  • Starr County
  • Willacy County

Each entry will be verified and submitted by either:
  • Local law enforcement agencies, or
  • Surviving family members seeking to keep their loved one’s memory alive and case visible.
RGV-FFOMC plans to expand the database to include additional counties across the region as resources allow.

Why This Matters:
Keeping a homicide victim’s case in the public eye not only honors their memory but also increases the likelihood of generating new leads, witnesses, or information that may help bring justice—visibility matters. Awareness saves cases.

How to Submit a Case:
Families or law enforcement agencies wishing to submit an unsolved homicide case for inclusion may do so by completing the official Case Summary -
Cold Case Submission - Google Forms

Submission Form
. Submission does not guarantee immediate inclusion; all entries are subject to verification and review.

⚠️ Please Note:

Rio Project Cold Case is not a private investigative service. This initiative is strictly for public awareness and advocacy purposes. All investigative matters remain under the jurisdiction of the appropriate law enforcement agencies.

Search

Show More Options

167 cases found.
CCR: 99-18929
Date Reported: November 3, 1999
VICTIM DETAILS
Name Juan Luis Garza Alaniz
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Blunt Force
Location Unknown
CASE DETAILS
Status Unsolved
Incident location North of 9 North on 6 1/2 West
Weslaco Texas, 78596
Hidalgo
L.E.A Hidalgo Co. Sheriff's Office

CCR: 12-13023
Date Reported: April 3, 2012
VICTIM DETAILS
Name Sandra Alcazar
Gender Female
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Blunt Force
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 10680 N. La Homa
Mission TX, 78572
Hidalgo
L.E.A Hidalgo Co. Sheriff's Office

CCR: 14-24315
Date Reported: June 11, 2014
VICTIM DETAILS
Name John Doe 4
Gender Unknown
Race Unknown
SUSPECT DETAILS
Name Unkown
Offense Murder
Cause Blunt Force
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 2419 Melissa
Weslaco Texas, 78596
Hidalgo
L.E.A Hidalgo Co. Sherriff's Office

CCR: 13-03653
Date Reported: January 29, 2013
VICTIM DETAILS
Name Dora Elia Gaitan
Gender Female
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Gun/Firearm
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 802 Church
San Juan Texas, 78589
Hidalgo
L.E.A Hidalgo CO. Sherriff's Office

Dora Elia Gaitan was fatally shot in her home in San Juan, Texas on January 29th, 2013.
CCR: 02-9498
Date Reported: April 21, 2002
VICTIM DETAILS
Name Maria Evangelina Zavala
Age 30
Gender Female
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Beaten/Battered
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 1 mile N of FM 1925 on Big Five Rd.
Edinburg TX, 78539
Hidalgo
L.E.A Hidalgo Co. Sheriff's Office

Maria was murdered along with two others on April 21st, 2002. This case remains unsolved, 2 decades have passed and nothing has been done. No Justice, No Peace.
CCR: 88-6941
Date Reported: April 23, 1988
VICTIM DETAILS
Name Hector Alaniz
Age 24
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name unknown
Offense Murder
Cause Gun/Firearm
Location unknown
CASE DETAILS
Status Unsolved
Incident location Jackson & FM 1925
Edinburg Texas, 78539
Hidalgo
L.E.A Hidalgo Co. Sheriff's Office

CCR: 89-02770
Date Reported: February 18, 1989
VICTIM DETAILS
Name David Sanchez Guerra
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Gun/Firearm
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 10 1/2 North & 4 1/2 West
Weslaco Texas, 78596
Hidalgo
L.E.A Hidalgo Co. Sheriff's Office

CCR: Unknown
Date Reported: December 21, 1989
VICTIM DETAILS
Name Efrain Garcia Villarreal
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Offense Murder
Cause Blunt Force
CASE DETAILS
Status Unsolved
L.E.A Cameron County Sheriff's Dept

Cold Case Spotlight

BROWNSVILLE, Texas (ValleyCentral) — A night out takes a turn for the worse after a man’s body was discovered beaten the morning after. 32 years later, Efrain Garcia Villarreal’s murder remains unsolved with no arrests. Villarreal was last seen on December 21, 1989, around 2 a.m. at the Taconazo Bar located in Cameron Park. According to the Cameron County Sheriffs Office, Villarreal was reported to have last been seen with a man known as “El Shorre” or the “Short One.” As the night came to an end and a new day began, Villareal’s body was found on Salida Del Sol Road. The investigation revealed that Villareal had been beaten to death with a heavy type of object that was used to strike him several times. Reporters at the time attempted to contact the Cameron County Sheriffs Office for more information but were not successful. This investigation remains active. If you have any information on this case, please call the Cameron County Crime Stoppers at their hotline: (866)-350-5551 or (956)-350-5551.
CCR: 97-14339
Date Reported: September 18, 1997
VICTIM DETAILS
Name Unknown
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Unknown
Location Unknown
CASE DETAILS
Status Unsolved
Incident location East of FM 1423
Donna Tx, 78537
L.E.A Hidalgo County Sheriff's Office

CCR: Unknown
Date Reported: April 18, 2006
VICTIM DETAILS
Name Merardo Magana Garza
Age 63
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Blunt Force
Location Unknown
CASE DETAILS
Status Unsolved
Incident location West
Los Ebanos Texas`, 78565
Hidalgo
L.E.A unknown

Cold Case Spotlight

Merardo Magana Garza was lovingly known as “Tano.” He was adored by many in the city of Mission and was known to be a sharp dresser and a ladies' man. The 63-year-old father was found dead on April 18, 2006 west of Los Ebanos. According to Chavez, at the time investigators could not determine Garza’s cause of death. “Officials were unable to see or say how he died because his body was burned and decomposed,” said Chavez. “But, it was ruled as a homicide, the cause is just undetermined.” Garza still had his jewelry when officials found him, according to Chavez... Chavez said investigators have been unable to reach out to family members for new leads and investigators have no trace of the immediate family. ValleyCentral located his obituary, which said Garza was married with children.