13-year-old son weighed just 21 pounds when he died in January.
A violent encounter several years ago reportedly led to the shooting of 17-year-old Deshon Duncan.
Charges against a St. Charles man have been upgraded to 2nd-degree murder in the death of his girlfriend.
According to police the victim met up with the two men after responding to a Craigslist ad concerning alternative lifestyles.
Investigators discovered the injury happened when the child was shook.