RIVERSIDE, Calif. (AP) — A California judge found Monday that a boy was responsible for the second-degree murder of his white supremacist father when the defendant was just 10.

Prosecutors had argued at trial that the boy, now 12, knew what he was doing when he shot 32-year-old Jeff Hall — a regional leader of the National Socialist Movement — and the slaying was premeditated.

Defense attorney Matthew Hardy countered that his client grew up in an abusive and violent environment and learned it was acceptable to kill people who were a threat. Hardy contended the boy thought if he shot his dad, the violence would end.