HUDSON, Wis. - On Thursday, prosecutors called a dozen witnesses to the stand in Aaron Schaffhausen's insanity trial as they try to prove Schaffhausen knew exactly what he was doing when he murdered his three daughters last July.

Schaffhausen has pleaded guilty to the crimes, but maintains he was insane at the time and lacked substantial capacity to conform his conduct to the standards of the law.

Jessica Volkmann, a compliance officer with Affinity Plus Credit Union, told the jury that the day before Schaffhausen murdered his daughters, he withdrew $1,000 from his account.

State crime lab experts also testified that toxicology tests showed Schaffhausen had small traces of nicotine in his system after the murders but no other drugs.

Several River Falls police officers described in gruesome detail how they entered the home through the garage, saw the fire place and smelled gas but saw no one in the home until they went upstairs.

"I saw the pool of blood and then I saw someone inside the bed," said Christopher Kober, the first officer to arrive at the Schaffhausen home.

Kober told the court that afterhe and the other officersdiscovered all three bodies they quickly exited the home because they were worried the house would explode.

Testimony will continue Friday at 8:30 am.

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