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Kevin Mannix, a retired San Francisco Police Department sergeant, was reported among three people found dead following a shooting at a residence in Marin County, California, on Sunday evening, October 11, 2026. Mannix’s wife, Ann Mannix, a retired SFPD deputy chief, was also reported among the victims, according to local news coverage citing sources familiar with the investigation. <Cite refs={[“turn967149search0″,”turn967149search4”]} />

The incident occurred on Strawberry Circle in the unincorporated Strawberry area near Mill Valley. Authorities confirmed that deputies discovered three deceased people inside the home after receiving a report of gunfire. Investigators had not publicly explained what led to the shooting, and the identity of the third person had not been officially disclosed in the reports reviewed. <Cite refs={[“turn967149search1″,”turn967149search5”]} />

The deaths have brought attention to the couple’s long association with San Francisco law enforcement and the professional careers they built before retirement.

What Happened in the Marin County Shooting?

According to the Marin County Sheriff’s Office information reported by local media, a 911 call came in shortly after 5 p.m. on October 11. The caller reported that shots had been fired inside a residence on Strawberry Circle.

Deputies arrived within minutes and made contact with the person who had reported the incident, who had safely exited the home. Officers established a perimeter before entering the residence, where they found three people dead. Detectives began investigating the scene. <Cite refs={[“turn967149search0″,”turn967149search1”]} />

Authorities had not released a detailed account of the events preceding the shooting. The relationship between the third victim and the other people involved also remained unconfirmed in the early reporting.

Officials indicated that there was no known continuing threat to the wider community. The investigation remained active as authorities worked to establish the circumstances surrounding the deaths. <Cite refs={[“turn967149search0″,”turn967149search5”]} />

Kevin Mannix’s Career With the San Francisco Police Department

Kevin Mannix served with the San Francisco Police Department for 27 years before retiring in June 2018. He retired at the rank of sergeant and had served at Taraval Station. <Cite refs={[“turn967149search0″,”turn967149search4”]} />

His departure marked the end of a lengthy career in policing, a profession built around public service, teamwork and the responsibility of responding to difficult situations. In a farewell message published by Taraval Station in July 2018, Mannix reflected on the friendships he had formed during his years with the department and his intention to spend more time with family and friends. <Cite refs={[“turn967149search0”]} />

News of his reported death has therefore resonated within the department where he spent much of his working life. San Francisco Police Chief Derrick Lew reportedly informed department personnel of the deaths of Kevin and Ann Mannix in a message expressing condolences and asking colleagues to keep their family in their thoughts. <Cite refs={[“turn967149search0″,”turn967149search4”]} />

Remembering Ann Mannix and Her Police Service

Ann Mannix also had a long career with the San Francisco Police Department. She retired in 2021 after rising to the rank of deputy chief.

Her career included a notable role in the department’s SWAT team. According to the reporting reviewed, she was the first woman to join the SFPD SWAT team and later became its first female leader. She was promoted to deputy chief of the Field Operations Bureau in 2018 and subsequently assigned oversight of the Special Operations Bureau. <Cite refs={[“turn967149search0”]} />

The reported deaths of both Kevin and Ann Mannix have placed their shared careers in the spotlight as colleagues and members of the wider community await more information about the investigation.

Investigation Into the Deaths Remains Ongoing

As of the latest reports reviewed on October 12, authorities had not publicly explained the motive or circumstances behind the shooting. The Marin County Sheriff’s Office was investigating, and the third deceased person had not been publicly identified in the reports available for this article. <Cite refs={[“turn967149search0″,”turn967149search1″,”turn967149search5”]} />

No cause of death beyond the reported shooting, detailed sequence of events or confirmed account of the relationship among all three people should be assumed without further official information.

Because the investigation was still in its early stages, additional details could emerge as investigators process evidence and release further statements.

Kevin Mannix Death: Key Details

A Loss for the Law Enforcement Community

For colleagues who served alongside Kevin Mannix, his career represents decades of professional relationships and shared responsibilities within a major city police department. His retirement message, as reported by the San Francisco Chronicle, highlighted the friendships he valued and his plans to devote more time to people close to him. <Cite refs={[“turn967149search0”]} />

Ann Mannix’s career likewise included years of service and leadership within the department. Their reported deaths have prompted expressions of condolence from the SFPD leadership while investigators continue to work through the circumstances of the Marin County incident.

Further information about the couple’s personal lives, family arrangements and memorial services should be drawn from verified statements by their family or other appropriate authorities.

Disclaimer

This report is based on news coverage available on October 12, 2026. Although local reporting identifies Kevin and Ann Mannix among the three people found dead, the Marin County Sheriff’s Office had not publicly released all victim identities or disclosed the circumstances leading to the shooting in the reports reviewed. The cause and sequence of events remain under investigation. No funeral arrangements or complete family obituary details have been independently established for this article, and this report may be updated as confirmed information becomes available.