Decorated San Francisco police officer and her daughter killed by her husband in suspected murder-suicide

Oct. 13, 2026, 3:41 PM EDT

The San Francisco Police Department was in mourning Tuesday after a trailblazing police officer and her husband, who also had worked for the department, were found dead along with their daughter in what investigators are calling a “suspected double-murder suicide.”

Retired Sgt. Kevin Mannix, 68, fatally shot his wife, Ann Mannix, 64, a retired deputy chief, and their 24-year-old daughter, Katherine Elizabeth Mannix, around 5 p.m. Sunday before turning the gun on himself, the Marin County Sheriff’s Office said.

Police found their bodies after responding to a home in a neighborhood just north of the city following a 911 call from a person “who safely exited the residence.”

Investigators have not released a motive for the mayhem and autopsies were scheduled Tuesday for all three individuals.

Meanwhile, the San Francisco PD was trying to absorb the loss.

“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,” the San Francisco Police Officers Association said in a statement posted online. “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.”

Kevin Mannix worked for the SFPD for 27 years before retiring from the department in 2018 with the rank of sergeant, according to the department.

But it was his wife who left the biggest mark on the department.

A fourth-generation San Franciscan with several relatives who had previously worked as police officers, Ann Mannix joined the SFPD in 1986 a little over a decade after it started to hire women as patrol officers, The San Francisco Chronicle reported.

Ann Mannix rose steadily through the ranks, from lieutenant in 2003 to commander in 2015 and to deputy chief in 2018.

Before retiring in 2021, she led the field operations and special operations bureaus, the police department said in a statement. And she was the first woman to be part of and later lead the SWAT team.