Homicide Detectives Investigating Murder in Fontana; Suspect has not Been Identified 

June 26, 2025 – San Bernardino County Sheriff’s Department officials report that on Friday, June 13, 2025, at about 3:03 p.m., deputies responded to a residence in Fontana for a report of an assault.  When deputies arrived, they located Antonio Fonseca lying in the street near the residence.  Fonseca had been stabbed and was pronounced deceased.  

During the initial investigation, deputies contacted several witnesses and detained them for questioning.  

The Sheriff’s Specialized Investigations Division – Homicide Detail also responded and assumed the investigation.  A suspect has not been identified and the investigation is ongoing.
 
Anyone with information regarding this case is urged to contact the Homicide Detail 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: June 13, 2025, at 3:03 p.m.
INCIDENT: PC 187 - Murder
LOCATION: 9000 Block of Hemlock Avenue, Fontana
SUSPECT(S): Unknown
VICTIM(S): Antonio Fonseca, 36-years-old, Resident of Fontana
Refer: Detective T. Kleveno
Station: Homicide Detail
Phone No. 909-890-4904
Case No. DR# 032501479  H# 2025-048

Source: San Bernardino County Sheriff’s Department