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: 89-08624
Date Reported: June 2, 1989
VICTIM DETAILS
Name Juan Jose Marquez
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Gun/Firearm
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 1/10 Mile S. of Rancho Toluca Rd. on Mile 3
Weslaco Texas, 78596
Hidalgo
L.E.A Hidalgo Co. Sherriff's Office

CCR: Unknown
Date Reported: September 6, 1988
VICTIM DETAILS
Name Arnaldo Garza Sr.
Age 45
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Gun/Firearm
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 822 W Wisconsin Rd
Edinburg Texas , 78539
Hidalgo County
L.E.A Edinburg Police Department

Cold Case Spotlight

EDINBURG, Texas (ValleyCentral) — An Edinburg family paid $70,000 for the safe return of their loved one only to have him discovered decomposed in a sugarcane field. Three decades later, Arnaldo Garza’s murder remains unsolved. Garza was a husband and welder, known for starting A&A Welding. The 46-year-old man was taken from his home and used as ransom on November 6, 1988, according to Texas DPS. His family received a call stating that Garza had been kidnapped, demanding money to be delivered to Reynosa, Mexico. Reporting the disappearance to authorities, the family delivered the $70,000 in ransom to an individual in Reynosa. Raul Garza, the Assistant Chief of the Edinburg Police Department at the time, immediately advised the kidnapping to the FBI. Additionally, the family reported the payment to officials. Reports at the time stated that “the family awaited an additional demand for delivery of money and return of Garza with completion of the ransom payment.” However, no further word was ever received. On November 17, 1988, Garza’s body was discovered “badly decomposed” in a sugarcane field near Moore Air Field in Edinburg, according to reports at the time in the Valley Morning Star. The following Wednesday, Garza’s wife identified his body through identification of clothing. Edinburg police also verified identity through dental records. Texas DPS asks anyone with information to call the Crime Stoppers hotline at 1-800-252-TIPS (8477) or submit a tip HERE. Texas Crime Stoppers is offering a cash reward of up to $3,000 to any person who provides information that leads to the arrest of the person/persons responsible for this crime.
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: 88-20798
Date Reported: December 16, 1988
VICTIM DETAILS
Name Nina McCumber
Gender Female
Race Caucasian/White
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Gun/Firearm
Location Unknown
CASE DETAILS
Status Unsolved
Incident location E. of Mile 2 1/2 E. Mile 6 3/4 N.
Mercedes Texas, 78570
Hidalgo
L.E.A Hidalgo Co. Sheriff's Office

CCR: 94-15848
Date Reported: June 18, 1994
VICTIM DETAILS
Name Alonso Garcia Ayala
Age 32
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name unknown
Offense Murder
Cause Blunt Force
Location unknown
CASE DETAILS
Status Unsolved
Incident location 2 miles N SH 107 on FM 1425
Edcouch Texas, 78538
Hidalgo
L.E.A Hidalgo Co. Sheriff's Office

CCR: 02-15529
Date Reported: June 27, 2002
VICTIM DETAILS
Name John Doe 13
Gender Unknown
Race Unknown
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Blunt Force
Location Unknown
CASE DETAILS
Status Unsolved
Incident location w. Iowa Rd on 5 mile line
Mission Texas, 78503
Hidalgo
L.E.A HCSO

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: 02-9484
Date Reported: April 21, 2002
VICTIM DETAILS
Name Celedonio Solis
Age 21
Gender Male
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

Celedonio 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: 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: 11-24868
Date Reported: June 14, 2011
VICTIM DETAILS
Name Manuel Alberto Luna
Age 28
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Blunt Force
Location Unkown
CASE DETAILS
Status Unsolved
Incident location FM 2812
Edinburg Texas, 78541
Hidalgo
L.E.A Hidalgo Co. Sherriff's Office