A man has been arrested for allegedly killing his own mother and then trying to blow up her Illinois home in an attempt to hide the evidence. On December 27, police discovered the body of 72-year-old Terrie "Tracy" Nguyen while conducting a wellness check after other family members had been unable to reach her for some time. O'Fallon police Lt. Patrick Feldhake said that the cause was still "undetermined" as of Wednesday, December 31, but Tracy's death was determined to be suspicious and violent.