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Testimony wraps up in Schaffhausen case

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Testimony in Aaron Schaffhausen's insanity trial concluded Monday with a psychiatrist saying mental illness did not prevent the defendant from knowing what he was doing when he killed his three daughters in River Falls last summer.

Dr. Erik Knudson testified that he interviewed Schaffhausen for six hours and concluded that the defendant planned the murders and tried to cover them up.

A mental health expert who testified for the defense last week said Schaffhausen's depression caused him to be legally insane and not responsible for the crimes. Knudson disagreed, testifying Monday that depression did not cause Schaffhausen to kill the girls.

After closing arguments and jury instructions, jurors will deliberate whether Schaffhausen is sentenced to a psychiatric hospital or to life in prison.

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