Stephanie Diaz, 49, a Hispanic woman, was shot in the head during a domestic violence incident in Upland on Friday, August 22, 2025, and later died at a hospital, where the Los Angeles County Medical Examiner classified her death as a homicide. The coroner’s records and subsequent reporting identified her by name and listed the manner of death as homicide due to a gunshot wound to the head; formal pronouncement was made on Sunday, August 24, 2025.
According to Upland Police and coroner-linked reporting, the shooting occurred in the 91786 ZIP code and was part of a murder-suicide: investigators determined that Diaz’s husband, 51-year-old Edward Becerra, shot her and then killed himself at the scene. Because the suspected shooter died, authorities did not make any arrests and do not anticipate further suspects in the case.
Community and memorial pages noted Diaz’s death over the weekend of August 23–24, with one listing her as “lost to gun violence” on August 23 in Los Angeles while family fundraising messages described a “tragic incident” that led to her hospitalization before she passed. These postings reflect the immediate aftermath as relatives and friends sought support, while official records aligned on the homicide ruling and the timeline culminating in the August 24 pronouncement.
