Rancho Cucamonga woman arrested after boy, 10, dies from narcotics poisoning
- A Rancho Cucamonga woman has been charged with child endangerment after 10-year-old Nathaniel Castro Mendoza died from narcotics poisoning.
- Christina Alvarez, 32, allegedly stored fentanyl improperly, leading to the boy's death, as determined by the San Bernardino County Coroner Division.
- Officers responded to an unresponsive boy in December, who then died despite life-saving efforts, prompting an investigation.
- Alvarez was arrested on March 14 and is held on a $100,000 bond pending further legal proceedings.
18 Articles
18 Articles

Rancho Cucamonga woman arrested after boy, 10, dies from narcotics poisoning
A Rancho Cucamonga woman has been charged with child endangerment after a 10-year-old boy died from narcotics poisoning. Officers responded in December to the 9000 block of Arrow Route after a report of an unresponsive 10-year-old boy, who died after officials attempted life-saving measures, according to the San Bernardino County Sheriff’s Department. The San Bernardino County Coroner Division investigated and determined in February that the boy…
Southern California woman arrested after boy dies from narcotics overdose
A suspect was arrested after a 10-year-old boy died from overdosing on illegal narcotics. In December 2024, San Bernardino County deputies responded to reports of an unresponsive child in the 9000 block of Arrow Route in Rancho Cucamonga. Authorities arrived at the scene and despite life-saving efforts, the child was pronounced dead. He was identified as Nathaniel Castro Mendoza, 10. The case remained under investigation and in February 2025, th…
Woman arrested after 10-year-old dies from fentanyl and xylazine toxicity
A Rancho Cucamonga woman was arrested after a 10-year-old child died from fentanyl and xylazine toxicity, authorities said. The incident happened in December 2024 in Rancho Cucamonga. According to the San Bernardino County Sheriff's Department, deputies responded to a 911 call regarding an unresponsive, 10-year-old child. Despite life-saving efforts, the child was later pronounced dead. The coroner determined the child died from fentanyl and xyl…
Poisoned: Fentanyl’s Child Victims
For more than two years, Scripps News has been independently tracking the fentanyl deaths and poisonings of babies and young children to shine light on trends that might save lives.Investigative reporter Lori Jane Gliha and investigative producer Brittany Freeman have read through thousands of pages of police documents, child fatality reports, autopsies, and court records.The Scripps News investigative team obtained more than 80 hours of police …
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