ST. LOUIS (AP) -- St. Louis police identify the baby who died in a hot car as 7-month-old Sophia Knutsen of Richmond Heights. Meanwhile, authorities say an investigation continues.

Sophia died yesterday, apparently after her parents became confused about who was caring for the child. Her father is Russell Knutsen, a medical school research analyst. Her mother is Doctor Beth Ann Kozel, a staff physician at St. Louis Children's Hospital.

A passer-by noticed the baby inside a car yesterday afternoon, when temperatures were in the 90s. A rock was used to break a window to try and save her, but Sophia was pronounced dead. She had been in her car seat for three hours.

The police Child Abuse Unit is handling the investigation.