Rio Grande Valley Friends and Families of Murdered Children

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
VICTIM DETAILS
Name Alan E. Bossom
Age 34
Gender Male
Race Caucasian/White
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Gun/Firearm
Location Unknown
CASE DETAILS
Status Unsolved
Incident location Robindale Road and FM 3248
Brownsville Texas, 78520
Cameron
L.E.A Cameron Co. Sheriff's Office

Cold Case Spotlight

BROWNSVILLE, Texas (KVEO) — This month marked 31 years since the murder of Alan E. Bossom was discovered. After a long day, many people can relate to feeling sluggish while driving home, so when a passerby reported a man asleep at the wheel they did not think that the man could be found dead. On July 4, 1990, Alan E. Bossom was found dead at the wheel of a vehicle at the intersection of Robindale Road and FM 3248 in Brownsville. Bossom had been in town for a couple of days before being discovered murdered. Chief Deputy at the time, Carlos Tapia, reported what sheriff’s deputies had seen when having responded to the crime scene. Tapia stated “they found Bossom inside a 1977 Chevrolet station wagon, slumped over the steering wheel,” according to an article from the Valley Morning Star. Deputies believed the man was asleep, however, after further observation, it became clear that Bossom had been murdered. Bossom had suffered a gunshot wound to his head. He was officially pronounced dead at the scene by the Justice of the Peace at the time, Tony Torres. Investigation revealed that family members did not know he was in town. This investigation remains active and no arrests have been made.
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: 94-11998
Date Reported: May 10, 1994
VICTIM DETAILS
Name Unknown
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name unknown
Offense Murder
Cause Blunt Force
Location unknown
CASE DETAILS
Status Unsolved
Incident location 1 mile E of tower on Owassa
L.E.A Hidalgo County Sheriff's Office
CCR: 15-48120
Date Reported: December 2, 2015
VICTIM DETAILS
Name Patricia Aevedo Chavez
Gender Female
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Gun/Firearm
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 12927 Santawan
Mercedes Texas, 78570
Hidalgo
L.E.A Hidalgo Co. Sherriff's Office
Patricia A. Chavez was fatally shot in her home on December 2nd, 2015 at approximately 8:50 pm in Mercedes, Texas.
CCR: 03-25018
Date Reported: October 15, 2003
VICTIM DETAILS
Name Unknown
Gender Unknown
Race Unknown
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Unknown
Location Unknown
CASE DETAILS
Status Unsolved
Incident location west of Iowa road
L.E.A Hidalgo County Sheriff's Office
CCR: 03-7374
Date Reported: April 1, 2003
VICTIM DETAILS
Name Norma Alvarez
Gender Female
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Unknown
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 8 1/2 north Bentsen Palm drive
L.E.A Hidalgo County Sheriff's Office
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: 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: 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: Unknown
Date Reported: April 29, 1991
VICTIM DETAILS
Name Guadalupe Lozano III
Gender Male
Race Hispanic/Latino
SUSPECT DETAILS
Name Unknown
Offense Murder
Cause Gun/Firearm
Location Unknown
CASE DETAILS
Status Unsolved
Incident location 1 mile East of the Village Hut Store on Highway 4
Brownsville Texas, 78520
Cameron
L.E.A Cameron County Sheriff's Office

Cold Case Spotlight

BROWNSVILLE, Texas (ValleyCentral) — A young man’s Saturday night out took a turn for the worst as his body was discovered a few hours later “bullet-riddled” and left for passerby’s to find. 30 years later, Guadalupe Lozano III’s murder remains unsolved with no arrests. Like many in their youth, Lozano hit the town for a night out on April 27, 1991. Lozano was last seen Sunday early morning around 2 a.m. getting into a Mercury Cougar with Mexican licenses plates along with 3 other men. Leaving a popular location at the time, the Casa Blanca Night Club in Brownsville, Lozano was never seen by the public after calling his evening a night with the other men. Cameron County Sheriff Deputies reported the body was found along Highway 4 at around 7:30 a.m. April 29, according to a report from the Valley Morning Star. Lozano’s body was discovered approximately a mile east of the Village Hut Store on Highway 4, according to a release from Cameron County Sheriff Eric Garza. Cameron County Sheriffs Office spokesperson told the Valley Morning Star that Lozano’s body was discovered with 13 bullet wounds to his head. Lozano’s body was identified through his numerous tattoos, one including his last name. Investigators later identified one of the three men as Bernabe Sosa, but have not made any arrests in the case. This case remains an open investigation. 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.