(CBS) — Police officers and firefighters responding to a medical call for a pregnant woman encountered a horrific scene: the mother’s alleged attempt to suffocate her newborn with a plastic bag.

The incident happened at 7:20 p.m. Sunday, according to a news release from the Morton Grove Police Department. Firefighters and police who responded to the medical call found a 21-year-old woman in the bathroom “in distress,” police said.

Fire personnel found an unresponsive newborn hidden in a sealed plastic bag under some towels, the news release said. The baby began showing signs of life, and paramedics worked on the child before taking the newborn to Lutheran General Hospital. The baby responded well to treatement. The child’s gender was not disclosed.

Charged with attempted murder was Xin Zeng of Morton Grove. She is expected in court Jan. 4, police said.