Three people were found dead inside a home on Strawberry Circle in Marin County on Sunday evening after deputies responded to a report of gunfire, authorities said. People familiar with the investigation identified them as retired San Francisco police sergeant Kevin Mannix, 68; his estranged wife, former SFPD Deputy Chief Ann Mannix, 65; and their daughter Katie, 24. The Sheriff’s Office had not publicly confirmed the identities or disclosed a motive as of Monday. Deputies received a 911 call at 5:03 p.m. reporting shots fired inside a residence in Strawberry, an unincorporated community east of Mill Valley. They arrived within minutes, contacted the caller, who had left the home safely, and secured the area before entering and finding three people dead, according to the Sheriff’s Office. A neighbor told reporters she heard a man yelling and saw someone run through the home’s gate, shouting, “Please call 911, he has a gun!” She then heard gunshots. Deputies said there was no known threat to the wider community. Investigators were processing the scene Sunday night, and the Sheriff’s Office said the investigation was in its early stages. Ann Mannix rose through the San Francisco Police Department and became deputy chief of its Field Operations Bureau in 2018. The following year, she was assigned to oversee the department’s Special Operations Bureau. She was also the first woman to join and later lead the SFPD’s SWAT team. Kevin Mannix retired in 2018 after 27 years with the department. In a farewell message that year, he wrote about the friendships he had made during his career and said he planned to spend more time with family and friends. San Francisco Police Chief Derrick Lew informed department staff of the deaths Sunday night and said the department’s behavioral science unit was available to employees needing support. The Sheriff’s Office said it would release more information as it becomes available. People experiencing domestic violence, or concerned for someone else, can contact the National Domestic Violence Hotline at 800-799-SAFE (7233), text START to 88788, or visit thehotline.org.