ELLSWORTH, Maine (AP) Police in Maine say a frantic search for a missing 1-year-old ended with the discovery of the baby in a car seat in a cold vehicle.

The Ellsworth Police Department says the baby was taken to a hospital for treatment of hypothermia and frostbite on Thursday and the child’s mother was charged with endangering the welfare of a child.

It was unclear how long the child had been missing when police received a 911 call at 11:20 a.m. Thursday. The Maine Department of Health and Human Services is also investigating.