Cross Plains, WI- Ralph Runk, 74, of Cross Plains died an accidental death from carbon monoxide poisoning, according to preliminary autopsy results released Monday by the Dane County Medical Examiner’s Office.

Medical examiner’s office, police, fire and utility personnel were called to Runk’s home in the 2700 block of Pleasant View Lane around 6 p.m. Saturday.

The incident remains under investigation by Cross Plains police.