Two toddlers were found dead Sunday afternoon in a car in South Georgia, police said.

Hinesville police were called to a home in the 200 block of Augusta Way in the Griffin Park subdivision shortly after 1:30 p.m., Capt. Tracey Howard told the Savannah Morning News.

A Kia was parked in the backyard, and the 3-year-old twin sisters were unresponsive inside, officials said. They were pronounced dead on the scene. Their names have not been released.

Police began to investigate and removed people from the home. Hinesville officials obtained a search warrant for the residence and called the GBI to assist with the investigation.

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Howard said it is too early to determine how the children ended up inside the car. The house isn’t the girls’ family home, but they often spent time there, according to police.

Howard told the newspaper that the toddlers were last seen Saturday night when they were put to bed. A caregiver made the 911 call, he said.

The children’s bodies were taken to the GBI Crime Lab for autopsies.

Anyone with information about the case is asked to contact the Hinesville police detectives at 912-368-8215.