A Pine Knot woman was arrested Friday after police found her baby locked in a running car by himself.
A customer at the Wal-Mart in Somerset alerted police, who estimate the baby was left unattended for 30 minutes. He was not injured.
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The baby's mother, Joni Helton, 22, was found shortly, but her behavior indicated she might be on drugs, according to Somerset police. A search of the vehicle revealed Xanax pills.
Police charged Helton with endangering the welfare of a minor and drug possession. She was taken to the Pulaski County Detention Center.
The baby was released into the care of a grandparent.