A Santa Rosa man who was found not guilty by reason of insanity in the slaying of his father was committed to a mental hospital Tuesday.

Judge Dana Simonds ordered Houston Herczog, 22, to be sent to Napa State Hospital for an indefinite period for treatment of mental illness.

He was found insane in the 2011 killing of Mark Herczog, 63. Prosecutors said he stabbed his father at least 60 times in the kitchen of their Rincon Valley home.

Doctors said Herczog was suffering paranoid schizophrenia and believed his father was possessed by evil forces trying to harm him.

Jurors concluded he was not responsible for the death because it happened during a psychotic break.

He will go to Napa State instead of serving life in prison without parole.