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.

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167 cases found.
CCR: Unknown
Date Reported: May 23, 1990
VICTIM DETAILS
Name Laura Guerra
Age 22
Gender Female
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Gun/Firearm
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 1111 W. Main Street.
RIO MOTEL
Rio Grande City Texas, 78582
Starr County
L.E.A Starr County Sheriff's Office

Cold Case Spotlight

On May 23rd, 1990, the dead body of Laura Guerra,22, was found in a wooded area across the road from the Rio Motel in Rio Grande City. The RIO MOTEL is located at 1111 W. Main Street. Investigators believe that Guerra was murdered at another location, possibly at the motel, and that her body was dumped in the wooded area. Autopsy results indicate that Guerra was killed three days earlier by a gunshot wound to the head. Several clues were followed, but the case went cold. Texas Rangers and the Starr County Sheriff’s Office have reopened this case, and are seeking the public’s help for information to help identify Guerra’s killer. Investigators believe that a possible witness may have information on this crime, and are asking for the public’s help in identifying a person known in the area, in 1990, known as "Gaston Garza," or "Mariano".
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: 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: Unknown
VICTIM DETAILS
Name Efren "Pipo" Quiroz Jr.
Age 33
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name Fidencio Castillo
Offense Murder
Cause Gun/Firearm
Location Unknown
CASE DETAILS
Status Unsolved
Incident location Expressway 83 and Val Verde Road
Donna Texas, 78537
Hidalgo
L.E.A Donna Police Department

Cold Case Spotlight

DONNA – Police are searching for a 38-year-old suspect involved in a fatal shooting. The incident happened at a Stripes Store on Expressway 83 and Val Verde Road. Donna Police Cpt. Rick Suarez told CHANNEL 5 NEWS 35-year-old Efren Quiroz Jr., of Alamo, was shot Saturday night. He said the suspect, identified as Fidencio Castillo, zeroed in on the victim while he walked out of the store. He fired a couple of shots at Quiroz, hitting him once in the back, according to Suarez. Police issued out a warrant to arrest Castillo on murder charges. Suarez says on Monday, officers and U.S. Marshals searched his Alamo residence. Police say the crime doesn't appear to be random. Both the suspect and victim are believed to have known each other. Authorities are also looking for a 2008 Dodge Ram with license plate number, KCF-3128. If you have any information, you're asked to call Donna Crime Stoppers at 464-8477. If the tip leads to an arrest, you're eligible for a $1,000 reward.
CCR: Unknown
Date Reported: August 27, 1988
VICTIM DETAILS
Name Ruth A. Melton
Age 79
Gender Female
Race Caucasian/White
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Blunt Force
Location Unknown
CASE DETAILS
Status Unsolved
Incident location Unknown
Unknown
Weslaco Texas, 78596
Hidalgo County
L.E.A Weslaco Police Department

On the night of August 26-27, 1988, an unknown person entered the home of Ruth Melton, 79-year-old women bludgeoned to death. An unknown suspect(s) entered the house through an unlocked door and went into Ruth`s bedroom, where he beat her to death. It is unknown what weapon the suspect(s) used in the beating. An autopsy confirmed that Ruth`s death was caused by a blunt force object to the head. She suffered a fractured skull and created a massive blood loss.
CCR: 11-39412
Date Reported: September 18, 2011
VICTIM DETAILS
Name John Doe 7 AKA: Niero
Gender Unknown
Race Unknown
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Blunt Force
Location Unknown
CASE DETAILS
Status Unsolved
Incident location San Bernardino Dr.
Alamo Texas, 78516
Hidalgo
L.E.A Hidalgo Co. Sheriff's Office

CCR: 88-13724
Date Reported: August 14, 1988
VICTIM DETAILS
Name Unknown
Gender Unknown
Race Unknown
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Unknown
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 1/2 mile north of Balli on Steward Rd.
L.E.A Hidalgo County Sheriff's Office

CCR: Unknown
VICTIM DETAILS
Name Nora Conde Villalobos
Age 49
Gender Female
Race Hispanic/Latino
SUSPECT DETAILS
Name Juan Manuel Tobias
Offense Murder
Cause Unknown
CASE DETAILS
Status Arrest Made
Incident location FM 1015 and Nittler Road
Hidalgo
L.E.A Hidalgo Co. Sheriff's Office

Cold Case Spotlight

While many take the time on Veterans Day to honor those who served, one Valley family continues seeking justice for their beloved veteran. Army veteran Nora Conde Villalobos was only 49 years old when her body was discovered in a canal off FM 1015 and Nittler Road in Hidalgo County in 2017. The discovery prompted the arrest of her boyfriend, Juan Manuel Tobias, on murder charges. More than four years later, her family continues fighting for justice, adding that days like today bring back memories of their beloved veteran. "Her laugh— it was a contagious laugh. You knew that laugh anywhere," said Michelle Rodriguez-Zamarron, Villalobos' niece. "She didn't care who you were. She didn't care about your past. She didn't care if you had money. She didn't care if you were walking off the street. She treated you like anybody else." Rodriguez-Zamarron says her aunt was the kind of person who made everyone feel like they mattered. "We've always wanted from the beginning is just justice," Rodriguez-Zamarron. "Justice on her behalf since she is no longer here. We, as her family, will continue advocating for her." Rodriguez-Zamarron says the family stays strong by focusing on the positive and remembering the sacrifices Villalobos and all veterans made. "Her memory lives on every day," Rodriguez-Zamarron. "Just because she's gone, she's not forgotten. Today is just another day that we honor her and every veteran out there that gave selflessly, enlisted, and served our country." country."
CCR: 01-19446
Date Reported: September 14, 2001
VICTIM DETAILS
Name Unknown
Gender Unknown
Race Unknown
SUSPECT DETAILS
Name Unknown
Offense Suspicious Death
Cause Unknown
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 13 1/2 miles north Conway
L.E.A Hidalgo County Sheriff's Office

CCR: 90-010906
Date Reported: July 31, 1990
VICTIM DETAILS
Name Leo Cadena
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Blunt Force
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 1 block N of Radio Rd. on McColl East side
Pharr Texas, 78577
Hidalgo
L.E.A Hidalgo Co. Sheriff's Office