US EditionSan Francisco Woman Found Guilty of Killing, Dismembering Roommate in 2018
Prosecutors said a jury found Lisa Gonzales guilty of second-degree murder and a knife-use allegation after an eight-year case.
- On Wednesday, a San Francisco jury convicted 55-year-old Lisa Gonzales of second-degree murder for the 2018 killing and dismemberment of her roommate, 61-year-old Margaret Mamer.
- Prosecutors argued escalating tensions over unpaid rent motivated the killing, after Gonzales gave Mamer a 30-day notice to move out in April 2018.
- A third roommate testified to hearing sawing noises and smelling chemicals throughout the apartment; police discovered Mamer's remains in a blue storage container in the basement on June 2, 2018.
- Gonzales remains in custody facing 16 years to life in prison. District Attorney Brooke Jenkins said the verdict "delivers justice" to Mamer's grieving family and friends.
- Although the case took eight years to reach verdict due to defense delays, a sentencing date will be set at a hearing later this month.
12 Articles
12 Articles
San Francisco woman convicted in hacksaw killing of roommate, hid body in storage bin
A San Francisco woman was convicted Wednesday of murdering and dismembering her roommate with a hacksaw in 2018, then hiding the remains in a plastic storage bin in a basement after telling the victim she had to move out.
Roommate From Hell: California Woman Convicted After Hacksaw Dismemberment - Tampa Free Press
A jury in California has delivered a guilty verdict in a case that local prosecutors are calling one of the most gruesome in the city’s modern history. On Wednesday, April 1, 2026, 55-year-old Lisa Gonzales of San Francisco was convicted of second-degree murder for the 2018 killing and dismemberment of her roommate, Margaret Mamer. The […] Roommate From Hell: California Woman Convicted After Hacksaw Dismemberment
8 Years on, SF Woman Convicted of the Grisly Murder and Dismemberment of Roommate Who Wouldn't Leave
A San Francisco jury has convicted Lisa Gonzales of the 2018 murder of her roommate Margaret Mamer, in a gruesome case in which police found Mamer's body dismembered and decomposing in a plastic bin.Margaret Mamer was 61 and living with then-47-year-old roommate Lisa Gonzales and a third roommate in a first-floor apartment at 255 14th Street. Gonzales, the master tenant, had lived in the apartment for decades, according to reporting by Mission L…
Woman convicted of murder in grisly killing of San Francisco roommate
SAN FRANCISCO (KRON) — A jury convicted a San Francisco woman this week of murdering one of her roommates and dismembering the victim’s body in an attempt to cover up the killing. Lisa …
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