The six children were taken to a local hospital and were determined to be in good health, officials said.
Medical staff reported that the dead baby boy did not have any obvious signs of traumatic injury or medical issues, according to WSMV.
The caregiver, 51-year-old Anne C. Jordan, was not at the apartment when the children were found, officials said.
Jordan was located later in the evening by hikers in Harpeth River State Park, police said. She was suffering from significant cuts to her arms, which police said appeared to be self-inflicted.
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Jordan was flown by helicopter to a Nashville hospital for treatment.
Her vehicle was found at the park and police said detectives were searching it for evidence.
The investigation is ongoing.
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