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In a final report Friday, the Tehama County Sheriff's Department said an autopsy determined 44-year-old Kevin Neal shot himself in the head in his car after police forced it off a road.
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Police say Neal killed his wife Nov. 13 and went on a shooting rampage in Rancho Tehama Reserve the next day that included firing at an elementary school. He killed four others, including two neighbors, and wounded eight people including a 6-year-old boy.
Authorities said neighbors had repeatedly complained about Neal firing hundreds of rounds from his house and engaging in other erratic, violent behavior.
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Relatives say he suffered from delusions and mental problems.