STRAWBERRY, Calif.** — A devastating shooting at a residence in Strawberry has left three people dead, including a retired San Francisco Police Department sergeant, his wife, and their adult daughter, according to reports citing sources familiar with the investigation.
Marin County sheriff’s deputies responded to reports of gunfire on Strawberry Circle on Sunday evening, October 11, 2026. Upon entering the home, deputies discovered three deceased individuals.
Although authorities have not publicly released the victims’ identities or confirmed the circumstances surrounding their deaths, reports have identified them as retired SFPD Sergeant Kevin Mannix, his wife, retired Deputy Chief Ann Mannix, and their daughter, Katie Mannix, whose age has been reported as either 24 or 25.
According to those reports, investigators believe Kevin Mannix fatally shot his wife and daughter before taking his own life. However, the Sheriff’s Office has not publicly confirmed that account, and no motive has been officially established.
There have also been unconfirmed reports suggesting that mental health challenges may have played a role. Officials have not publicly verified that information, and the circumstances leading to the tragedy remain under investigation.
## 911 Call Brings Deputies to the Scene
According to the information released about the incident, dispatchers received a 911 call at approximately 5:03 p.m. Sunday reporting gunfire inside a residence on Strawberry Circle.
The home is located in Strawberry, an unincorporated community near Mill Valley in Marin County.
Deputies arrived within minutes and made contact with the caller, who had safely exited the residence. Authorities secured the area before entering the home, where they discovered three people dead.
Detectives subsequently began processing the scene and gathering evidence to determine what happened inside the residence.
Officials have not publicly identified the caller or explained what the individual may have witnessed. The nature of the caller’s relationship, if any, to the people inside the home has also not been disclosed.
Authorities have indicated that there was no known ongoing threat to the wider community.
## Two Distinguished Law Enforcement Careers
The tragedy has drawn attention to the decades of public service associated with Kevin and Ann Mannix, both of whom built careers with the San Francisco Police Department.
Ann Mannix served in several leadership positions during her career. In 2018, she became deputy chief of the department’s Field Operations Bureau and later oversaw the Special Operations Bureau.
She was also recognized as the first woman to join the department’s SWAT team and subsequently become its leader. She retired from the department in 2021.
Kevin Mannix retired in June 2018 after approximately 27 years with the San Francisco Police Department. During his service, he worked as a sergeant at Taraval Station.
In a farewell message shared around the time of his retirement, he reflected on the friendships he had developed throughout his career and expressed plans to spend more time with family and friends.
Their long records of service make the reported circumstances surrounding their deaths especially heartbreaking for colleagues, friends, and members of the communities they served.
## Investigation Continues as Community Mourns
The deaths have left unanswered questions about what happened inside the Strawberry residence and what circumstances may have preceded the shooting.
Investigators are expected to continue reviewing the evidence and establishing the sequence of events. Until authorities release additional findings, the reported account of how the three people died and any possible motive should be treated as unconfirmed.
The tragedy is also being felt beyond Marin County, including in Sonoma County, where residents and community members have expressed sympathy for those affected.
Three lives have been lost, and a family has been devastated. The deaths also represent a painful moment for the law enforcement community, where the Mannixes spent decades serving the public.
As the investigation continues, thoughts and condolences are with the family’s loved ones, former colleagues, and everyone struggling to come to terms with this heartbreaking loss.
**Memorial Ash News will continue to follow the investigation and share confirmed updates as more information becomes available.**
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