NJ.com reports Deana Joseph called 911 on Saturday night to report her child was unresponsive.
Salem County Prosecutor John Lenahan says the child was found dead in a car parked in the driveway of Joseph's home with the engine running. Lenahan says it appears the child might have injured herself in the car seat.
The exact cause of death will be determined by the medical examiner's office.
Joseph was charged with second-degree child endangerment. No attorney information is available.
Court records show it is Joseph's third arrest in nine years on charges related to neglect of a child.
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