Blackwell put her 4-day-old son in a refrigerator at her home on Rose Street on Feb. 27, officials said. After three hours, the child was removed from the fridge, which was working, and the family called emergency services, a warrant showed.
The infant, William David Lewis, died the same day of hypothermia, according to the Chester County coroner.
Authorities have not said what led Blackwell to put her child in the fridge.
Jeff Lewis, the newborn child's father, was in tears while speaking with WSOC. He said Blackwell is innocent and called her "a good mom."
A judge on Tuesday afternoon denied Blackwell bond at a hearing.
The coroner said the investigation took six months because officials had to conduct extensive interviews about the newborn’s death.
If convicted, Blackwell faces a possible life sentence.
Additional information on the case was not immediately available.
About the Author