Officers in Lowell, Indiana, are investigating the discovery Monday of a newborn wrapped in a black towel with the umbilical cord and placenta still attached.
KTLA sister station WGN in Chicago reported the infant was found by a 9-year-old girl playing in her backyard in the 18000 block of White Oak Avenue. Lowell is about 40 miles south of Chicago.
The infant was lying in the sun on a day with temperatures were nearing 90 degrees.
At a news conference Monday, Lake County Sheriff John Buncich called the infant "Miracle Baby Jane Doe" and referred to the child who found her as a "guardian angel," the Chicago Tribune reported.
The baby was taken to the hospital and is expected to recover. The child's mother has not been located.
The sheriff believes the newborn may have been left in the yard sometime overnight.
"The baby was found in a very rural area, and to think if the 9-year-old wouldn't have gone outside, this could've had a very different outcome," Buncich said.
Elysia Laub told Chicago TV station WBBM she didn't save the baby by herself.
“Somebody helped me," Laub said. "God.”
Anyone with information about this incident is urged to call the Lake County Sheriff’s Department Report-a-Crime Hotline at 800-750-2746.
Under the Indiana Safe Haven Law, a child between the ages of 1 and 30 days may be securely placed into the hands of authorities at a fire station, police station or hospital emergency room if the parents feel they are unable to properly care for that child. No questions will be asked and all parties may remain anonymous.