Detectives Investigating In-Custody Death at the West Valley Detention Center 

February 23, 2026 – San Bernardino County Sheriff’s Department officials report that on Saturday, February 21, 2026, at approximately 2:59 p.m., deputies assigned to the West Valley Detention Center were notified of an inmate experiencing a medical emergency. A deputy and a facility nurse who were nearby immediately responded to the housing unit and began rendering aid to the inmate, identified as Alex Alvidrez. Life saving measures were initiated and continued by medical staff until personnel from American Medical Response and the Rancho Cucamonga Fire Department arrived. Despite these efforts, Alvidrez was pronounced deceased at the scene. 

The Sheriff’s Specialized Investigations Division – Homicide Detail responded to the location and assumed the investigation. It was found that Alvidrez was originally arrested and booked at the West Valley Detention Center on October 9, 2025, by the Twin Peaks Sheriff’s Station on a charge of PC243(D). The investigation is ongoing and no further information is available at this time.

Anyone with information about this case is asked to contact Detective Hospodar Specialized Investigations Division at 909-890-4904. Callers wishing to remain anonymous should contact We-Tip at 1-800-78-CRIME (27463) or go to www.wetip.com.

DATE:  February 21, 2026, at 2:59 p.m.

INCIDENT: In Custody Death Investigation

LOCATION: West Valley Detention Center, Rancho Cucamonga

DECEDENT: Adam Alex Alvidrez, 58-year-old, Resident of Beaumont

Refer: Detective Hospodar

Station: Homicide Detail

Phone No. 909-890-4904

Case No. DR# 602600021 H# 2026-023

Source: San Bernardino County Sheriff’s Department