A 23-year-old woman has been arrested on first-degree murder charges after authorities reportedly found an unresponsive newborn infant behind a home in Highlands Ranch, Colo., the Denver Post reported. The umbilical cord was still attached to the little girl, who was found naked on a neighbor’s back porch.

Camille Wasinger-Konrad, who was renting a room next door to the house where the newborn’s body was discovered, was taken into custody and booked at Douglas County Detention Center. She was identified as the baby’s mother and is currently being held without bond. (See video, below.)

Police gave no details on why the baby was left on the neighbor’s back porch in temperatures that dipped to at least ten degrees below freezing.

Douglas County Sheriff’s Office responded to a 911 call around 9:48 p.m. Tuesday. They recovered the baby girl’s body, and detectives are now working with the Douglas County Coroner’s office to determine the cause of death.

Wasinger-Konrad is scheduled to appear in court on Jan. 9.