(CNN) The mother of missing 5-year-old Taylor Rose Williams has been arrested and charged with child neglect and giving false information to investigators, Jacksonville, Florida, Sheriff Mike Williams said Tuesday.

The announcement came hours after authorities said human remains were found in in a wooded area in Alabama.

Taylor's mother, Brianna Williams, was charged at a Florida hospital, where she was being treated for an apparent overdose, Sheriff Williams said. She was in serious condition.

"The suspect has been absentee booked at a local hospital after being admitted today due to an apparent overdose of some sort," Williams told reporters.

Williams said it was unclear whether the child's mother had attempted to take her own life.

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