Authorities say a North Carolina woman drowned her 6-week-old baby in a pond at an outlet mall in Myrtle Beach.

Horry County Police charged 24-year-old Jameisha Alexander of Carrboro, North Carolina, with murder Monday.

An arrest warrant says someone saw Alexander holding her son King near the pond Saturday night, but by the time security arrived, the baby was in the water. An autopsy found the baby drowned. The warrant says Alexander was arrested after crashing her car two hours later.

Alexander's mother and grandmother told The Associated Press she was overwhelmed with her first baby, but that she loved her boy.

Her mother, Sandra Jones, says the baby's father was abusive and didn't support Alexander. She says Alexander was being seen for depression before and after her son's birth.