A Michigan husband and father is suspected of fatally shooting his wife and six children before taking his own life last week, authorities said. Jake Sparks said investigators believe that 47-year-old Kristopher Karolkiewicz killed his wife, 39-year-old Amanda Karolkiewicz, and their six children — four boys, ages 15, 12, 11, and 5, and two 11-year-old girls — before killing himself. “The manner of death for Amanda and the six children was ruled homicide. Autopsies confirmed the identities of the deceased as Kristopher and Amanda Karolkiewicz and their six children, four of whom were the couple's biological boys. The American Heart Association confirmed that “Kristopher Karolkiewicz was an employee ... from September of 2023 until earlier this month, July 2026, when his employment ended," WWMT-TV reported.