A fatal shooting incident in Marin County, California, left three people dead, including two former San Francisco Police Department (SFPD) officers, on Sunday, October 11, 2026. Local law enforcement authorities have officially initiated a comprehensive investigation into the circumstances surrounding these deaths.
On Sunday evening, three bodies were discovered inside a residential home located in the community of Strawberry, an unincorporated area of Mill Valley near Tiburon. According to initial reports from local media outlets, officers from the San Francisco Police Department (SFPD) responded to urgent reports of gunfire in the area at approximately 5 p.m. on Sunday.
Marin County Sheriff Miguel Almaguer confirmed that deputies arrived at the scene and discovered three deceased individuals. While the sheriff did not initially release the identities of the victims, he stated, "Inside the home, they discovered three deceased bodies.
The nature of those victims and their connection to one another are all part of our active investigation." Although the specific circumstances surrounding the shooting remain under active investigation, ABC Los Angeles reported that the suspect is believed to be former SFPD Sergeant Kevin Mannix.
The outlet, citing reliable sources, reported that Mannix allegedly shot and killed his wife, Ann Mannix, who was a former SFPD Deputy Chief, and their 25-year-old daughter, before ultimately taking his own life. The incident has sent shockwaves through the local community and the law enforcement circles of San Francisco.
Neighbors expressed their disbelief as the quiet neighborhood of Strawberry was cordoned off by police tape for several hours while forensic teams processed the scene. Authorities have stated that they are working to piece together the timeline of events leading up to the tragedy.
They are currently interviewing witnesses and reviewing any available surveillance footage from the surrounding properties to determine if there were any prior indicators of domestic distress. The Marin County Sheriff's Office has requested that the public remain patient as they conduct a thorough forensic analysis.
They emphasized that the safety of the community is their primary concern and that there is no ongoing threat to the public following the incident. As the investigation continues, the SFPD has expressed its condolences to the families affected by this tragedy.
The loss of two former high-ranking officers has prompted a somber response from the department, which is cooperating fully with the Marin County authorities. Further updates regarding the official cause of death and the final findings of the investigation are expected to be released by the coroner's office in the coming days.
The community remains in mourning as they await more details on this devastating event.