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Krista's co-worker told police that she was supposed to work, but did not show up.
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This is the date Chandler Halderson told police and neighbors he last saw his parents.
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According to the criminal complaint, Chandler was at a property in Cottage Grove that belonged to the family of his girlfriend.
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Chandler reports his parents, Bart and Krista Halderson, as missing.
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He told 27 News similar information to what he told police: that his parents went to Langlade County with friends he didn't know and that they hadn't returned home.
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Police announced that they had discovered human remains, calling them "unidentifiable."
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According to the criminal complaint, the individual who saw suspicious activity in Columbia County came forward and reported what she saw.
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The previously "unidentified" human remains found in Cottage Grove were formally identified as belonging to Bart Halderson.
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The search lead to a grim discovery: more human remains. The remains were not immediately identified.
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Chandler was formally charged in the death of his father, and now has a $1 million bail.
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The Dane County Medical Examiner's office had completed an autopsy on July 16, but had been able to identify who the remains belonged to, and additional testing was ongoing.
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Although not announced until three days later, more human remains were found on this date in connection to the case.
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A second set of first-degree intentional homicide, hiding a corpse, mutilating a corpse, and providing false information on a missing person's case were added to his charges.
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Chandler appeared in court for an arraignment on the charges related to his mother's death, pleading not guilty to all charges.
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The acts are currently under seal. All of them involve communication with Krista and Bart, and take place "within a time frame leading up to the alleged dates of the crimes."
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I think that after this trial is finished he will end up spending most, if not all of his life in jail. I think what happened was gruesome and not right. He should not be free for fear that he might do that to someone else. It is disturbing that someone can to that to their family.