Clarisa Figueroa, 46, and Desiree Figueroa, 24, were already charged with murder in connection with the death of the infant's mother, Marlen Ochoa-Lopez, 19, after police say they lured the pregnant mom to their house and then strangled her on April 23.
Authorities said the mother and daughter then cut the baby from Ochoa-Lopez’s womb, and Clarisa allegedly tried to pass the baby off as her own when they called an ambulance for the unresponsive newborn.
Ochoa-Lopez was found dead on the Figueroas' property on May 15.
The baby, Yovanny, was on life support for weeks after suffering brain damage in the attack.
Initially, there was hope, as the baby began to show small signs of improvement. He started breathing on his own after six weeks and his family was expectant he'd pull through.
On June 14, though, his health took a turn and he died.
“It is with great sadness that we inform you of the passing of baby Yovanny Jadiel Lopez,” family friend Julie Contreras said at the time.
Clarisa and Desiree were already charged with first-degree murder, aggravated kidnapping,and aggravated battery in connection with Ochoa-Lopez death and had both pleaded not guilty.
Clarisa’s boyfriend, Piotr Bobak, was also charged with concealing a homicide and had pleaded not guilty as well.
Clarisa and Desiree have already been denied bond on the new murder charge.