Updated: 04/04/2013 1:56 PM KSTP.com By: Maricella Miranda
The St. Croix County prosecution said that the father who admitted to killing his three daughters in River Falls, Wis. made a "conscious choice" to make his ex-wife suffer by the killings.
"He fantasized and rehearsed this deed," the prosecution said.
Opening statement ended Tuesday in St. Croix District Court in the insanity trial of a man who admitted last week that he killed his daughters in their River Falls home.
Thirty-five-year-old Aaron Schaffhausen pleaded guilty to three counts of first-degree intentional homicide, but he maintains he is not responsible because of a mental illness.