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: 06-22986
Date Reported: July 3, 2006
VICTIM DETAILS
Name Juan Alvarado
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Blunt Force
Location Unknown
CASE DETAILS
Status Unsolved
Incident location South of Bus 83 on Scott Lane West on Daniel
Mission TX, 78572
Hidalgo
L.E.A Hidalgo Co. Sheriff'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: 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: 03-19852
Date Reported: August 17, 2003
VICTIM DETAILS
Name John Doe 10
Gender Unknown
Race Unknown
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Blunt Force
Location Unkown
CASE DETAILS
Status Unsolved
Incident location N. of 4 Mile Line on Inspiration Rd.
Mission Texas, 78503
Hidalgo
L.E.A HCSO

CCR: 01-19446
Date Reported: September 19, 2001
VICTIM DETAILS
Name Unknown
Gender Unknown
Race Unknown
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Unknown
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 13 1/2 miles north of Conway
L.E.A Hidalgo County Sheriff's Office

CCR: 17-01-004
Date Reported: January 1, 2017
VICTIM DETAILS
Name Juan Manuel Belmarez
Age 35
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Gun/Firearm
Location Unknown
CASE DETAILS
Status Unsolved
Incident location Jose Borrego St and Hwy 107
Edcouch Texas, 78538
Hidalgo County
L.E.A Edcouch Police Department

Cold Case Spotlight

Texas Rangers Lead the Homicide Investigation in the murder of Juan Manuel Belmarez. The murder and shooting death of Juan Manuel Belmarez occur on Reyes St. and South Ave in Edcouch. A white SUV suburban was stopped in the middle of the street with riddle with bullet holes through the front windshields. The murder took place around 7:00 pm on Sunday. The family wants Justice for Juan Belmarez.
CCR: Unknown
Date Reported: May 12, 2005
VICTIM DETAILS
Name Alberto Castaneda
Age 74
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Blunt Force
Location Unknown
CASE DETAILS
Status Unsolved
Incident location Mile 10 N and Mile 1 W
Mercedes Texas, 78570
Hidalgo
L.E.A Hidalgo Co. Sheriff's Office

Cold Case Spotlight

When deputies arrived, they discovered the bodies of 52-year-old Reynaldo Castaneda and 74-year-old Alberto Castaneda. Newspaper archives indicate that the men were a father and his son. 74-year-old, Alberto Castaneda At the time, authorities said there was clear evidence of foul play. In January 2021 the Hidalgo County Sheriff’s Office asked anyone with information about the double homicide to come forward.
CCR: 03-31820
Date Reported: December 31, 2003
VICTIM DETAILS
Name John Doe 6
Gender Male
Race Caucasian/White
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Blunt Force
Location Unknown
CASE DETAILS
Status Arrest Made
Incident location F.M. 493 & 12 1/2 N. E. on Victoria Rd.
Donna Texas, 78537
Hidalgo
L.E.A Hidalgo Co. Sherriff'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: 96-26006
Date Reported: September 10, 1996
VICTIM DETAILS
Name Unknown
Gender Female
Race Caucasian/White
SUSPECT DETAILS
Name Unknown
Offense Suspicious Death
Cause Unknown
Location Unknown
CASE DETAILS
Status Unsolved
Incident location Whalen Rd and Border Rd
Donna Tx, 78537
L.E.A Hidalgo County Sheriff's Office