Hall County investigators said a teenage mother tied up and gagged her 16-month-old son Wednesday evening and then drove him to the edge of Lake Lanier.

Grace An, 18, has been arrested and charged with child cruelty, reckless conduct and false imprisonment. Investigators haven't said what her motives were or what she was planning to do.

Authorities said the 16-month-old little boy was lying on the backseat floorboards; his hands, feet and mouth all bound and gagged with cellophane and packing tape. An was arrested at the scene while the child was taken to a hospital to get checked out. He was later turned over to DFCS.