Sheriff's officials said 50-year-old Rebecca Lizarraga was armed with a gun near Lake Cachuma in Santa Barbara and was threatening to kill herself on Thursday. At one point, deputies said she fired several rounds into the air, according to KEYT.
Deputies used non-lethal weapons to take her into custody.
Lizarraga was the attorney for Aramazd Andressian, who, in 2017, pleaded guilty to killing his 5-year-old son and then dumping his body near Lake Cachuma after a trip to Disneyland.
The young child had been reported missing by his mother for several months after he never came home from a visit with his father. The man later told L.A. County detectives he suffocated his son and left his body in Santa Barbara County.
Andressian Sr. was sentenced to 25 years to life in prison.
RELATED: Mom of slain 5-year-old South Pasadena boy talks about last moments with her son