Authorities said the Figueroas strangled Ochoa-Lopez and cut her baby from her womb. Clarisa Figueroa later called 911 to falsely claim she'd given birth to a child who was not breathing, investigators said. Tests later confirmed the newborn was Ochoa-Lopez's son.
The baby, named Yovanny Jadiel Lopez, died in June of severe brain injury.
Both Figeuroas have been charged with one count each of first-degree murder, aggravated kidnapping, dismembering a human body and concealing a homicidal death. They pleaded not guilty to the charges on June 26, the Tribune reported.
Clarisa Figueroa's boyfriend, 40-year-old Piotr Bobak, was also arrested and charged with one count of concealment of a homicide. He has also pleaded not guilty, according to WTTW.