A Cincinnati woman attacked by her 13-year-old daughter is blaming the fictional online demonic entity Slender Man for the girl's behavior.
Slender Man is the same character police say two Wisconsin 12-year-old girls claim influenced them to stab another girl earlier this month.
The woman told NBC affiliate WLWT that her 13-year-old daughter attacked her with a knife in their kitchen.
"She had her hood up and had her hands covered with her sleeves and the mask," the woman said, adding that her daughter was "someone else during [the] attack."
The woman says she discovered disturbing references to Slender Man in her daughter's writing.
"We found things that she had written and she made reference to Slender Man. She also made references to killing," the mother told WLWT. "She even created a world for Slender Man in the game Mine Craft."
Slender Man, a tall, faceless being in a black suit, is a fictional character notorious for stalking and terrorizing children.
The Cincinnati woman says her daughter's attack may have been an attempt to appease Slender Man, and believes the Wisconsin incident may have pushed her over the edge.
The girl is being held in a juvenile detention center. Her mother suffered minor injuries, including cuts to her face and neck, as well as a wound to her back.