A Penobscot County Superior Court jury ruled today that Perley Goodrich Jr. was sane when he fatally shot his 76-year-old father, Perley Goodrich Sr., in Newport in October 2009. Goodrich was found guilty on Tuesday of manslaughter and aggravated assault for beating his mother before he shot his father.

The Bangor Daily News reports that defense attorney Jeffrey Silverstein told jurors today that Goodrich’s actions were the result of a severe mental defect.

Assistant Attorney General Andrew Benson said it isn’t enough to prove Goodrich was or is mentally ill, but that it needed to be proved he was psychotic at the time of the shooting.