Rancho Cucamonga — 38-year-old Zacarias Joseph Ruiz of San Bernardino died on January 19, 2026, while in the custody of the West Valley Detention Center. He had been in custody since May 5, 2025. jail

Incident Details

At approximately 11:12 p.m., deputies found Ruiz unconscious in his cell with visible trauma.  Both deputies and jail medical staff attempted lifesaving efforts and Ruiz would be transported to a nearby hospital. However, he would be pronounced deceased the following day. 

Detectives with the Sheriff’s Specialized Investigations Division – Homicide Detail found that Ruiz had been in a physical altercation with his cellmate, 26-year-old Isaiah Mark Bailon of Barstow, before being found unresponsive. Bailon has since been supplementally booked for murder 

The investigation remains ongoing, and an autopsy will determine the official cause and manner of death.

Legal Oversight and Standards 

California requires law enforcement agencies to report all deaths in custody under California Government Code § 12525.

Investigators will evaluate:

  • Whether appropriate monitoring and safety-check procedures were followed

  • The timeliness and adequacy of the medical response

  • Whether any environmental or procedural factors contributed to the emergency

  • Compliance with state and local jail-safety standards

If authorities determine that unconstitutional conduct, negligence, or inadequate medical care contributed to the death, families may pursue civil-rights claims under 42 U.S.C. § 1983.

Seeking Accountability for In Custody Deaths

If you witnessed this incident, knew Zacarias Joseph Ruiz, or are seeking to understand your rights, consider the following steps:

1. Request Public Records

This may include medical logs, transportation-area surveillance footage, emergency-response records, and coroner findings.

2. Preserve Any Evidence You Have

Document the time, location, and what you observed. Save any videos, photos, or notes related to the incident.

3. Consult with a Civil-Rights Attorney

Families may have legal options when deaths in custody raise questions about medical response, jail policies, or constitutional protections.

If you or a loved one has been impacted by an in-custody death such as this one involving Zacarias Joseph Ruiz, contact The Sehat Law Firm at (949) 825-5200 for a free consultation, or complete the confidential form at the bottom of this page to speak with our legal team.

Legal Disclaimer:
This article provides general information only and should not be considered legal or medical advice, nor does it create an attorney-client relationship. Laws vary, and any referenced here may not apply to your situation. This article was created from secondary sources and may not be completely accurate. If you have any concerns, please contact us, and we will update or remove the post as needed.