Morgan Geyser, one of two girls who tried to kill a classmate in 2014 to please fictional horror character Slender Man, was on the loose Sunday night after cutting off her ankle bracelet and disappearing from her Wisconsin halfway house.

“Officers are searching for a woman who cut off her Department of Corrections monitoring bracelet and left a group home Saturday night,” the Madison Police Department said in a statement accompanied by a photo from security footage. They said she’d last been seen around 8 p.m. Saturday with an “adult acquaintance,” adding, “ her whereabouts are unknown as of Sunday morning.”

Geyser, now 22, was 12 at the time of the attack, as were accomplice Anissa Weier and victim Payton Leutner. The two had been charged as adults for luring Leutner to a park in

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