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A retired San Francisco police officer killed his wife and their adult daughter in their Northern California home on Sunday before turning the gun on himself in an apparent murder-suicide, according to the Marion County Sheriff's Office.
The sheriff's office confirmed their deaths on Monday, Oct. 12, and indicated that Kevin Mannix, 68, a retired San Francisco sergeant, was the suspected shooter who killed Ann Elizabeth Corriea Mannix, 65, a retired San Francisco deputy chiefand
their 24-year-old daughter Katherine Elizabeth Mannix.
It is unclear what led up to the shooting, as the Marion County Sheriff's Office noted that they were still in the early stages of their investigation.
The sheriff's office received calls around 5 p.m. Sunday of shots fired in the Strawberry Circle neighborhood, an unincorporated area of Marion County, according to the sheriff's office. The neighborhood is about 30 minutes north from San Francisco.
Deputies quickly arrived to the scene and located the caller of the report, who was inside of the home. After safely removing them from the premises, deputies secured the perimeter and entered into the residences, according to Miguel Almaguer of the Marin County Sheriff's Office.
"Inside the home, they discovered three deceased bodies," Almaguer said during a press conference.
At the time of discovery, deputies did not know the potential relationship between the three deceased individuals, but that quickly changed as within a few hours, San Francisco Police Department Chief Derrick Lew sent a department-wide emailconfirming their deaths.
The SFPD has been rocked by a double murder suicide involving two high-profile members of the department.
— Dan Noyes (@dannoyes) October 12, 2026
Sources with intimate knowledge of what happened tell me that retired SFPD Sgt. Kevin Mannix shot and killed his wife, retired SFPD Deputy Chief Ann Mannix, killed his… pic.twitter.com/8M6iZH03as
"It is with heavy hearts that we share the news of the passing of Ann and Kevin Mannix," the email reads. "Please keep their family in your prayers."
On Monday, the San Francisco Police Officers Association released a statement about the death of Ann, Kevin and their daughter.
"There are no words that can fully capture the depth of this tragedy, nor are there simple answers to the painful questions we are all asking," reads the association's post. "The tragic loss of retired Deputy Chief Ann Mannix, her daughter Katie, and retired Sergeant Kevin Mannix in a suspected murder-suicide has left our entire SFPD family reeling."
Ann Mannix was a fourth-generation San Franciscan who put her life on the line everyday during her 37-year career. She was called a "trailblazer" in the San Francisco Police Department, according to the association.
She was the first woman to join and lead the SWAT team, and eventually lead both the department's Field Operations and Special Operations Bureaus. Additionally, Ann Mannix was known for being a passionate role model in the community by serving on the San Francisco Police Activities League and its board.
"The interaction between kids and police is essential to building relationships in communities as these kids learn and grow through sports participation,” reads her former staff page on the San Francisco Police Activities League website. "I value the ability to be involved and shape a young person’s life, to be a positive role model in their formative years."
Kevin Mannix worked for the San Francisco Police Department for 27 years before retiring from the department in 2018, according to a newsletter released by the department.He ended his career working at the Taraval Police Station, which is located near San Francisco's Sunset District.
In one of the department's newsletters, Kevin Mannix wrote a message to his former colleagues before officially retiring from the department.
"Over the years I have learned something valuable from each of you either about law enforcement or the importance of the community supporting our mission at SFPD," his message reads. "Please continue to keep in your prayers all the Police Officers and their families who have died or become severely disabled as a result of protecting all of us and putting our lives first."
Noe Padilla is a Northern California Reporter for USA Today. Contact him at npadilla@usatodayco.com, follow him on X @1NoePadilla or on Bluesky @noepadilla.bsky.social. Sign up for the TODAY Californian newsletter or follow us on Facebook at TODAY Californian.
This article originally appeared on USA TODAY: Retired San Francisco officer kills wife, daughter in murder-suicide
