A Wisconsin woman who admitted to nearly stabbing a classmate to death in 2014 at age 12 to please the online horror character " Slender Man " was found a Chicago suburb late Sunday, hours after she cut off her electronic monitoring device and left a group home, authorities said.

Madison police issued an alert Sunday morning for Morgan Geyser, now 23, saying she was last seen around 8 p.m. Saturday with an adult acquaintance. The department issued an update that Sunday evening that Geyser had been taken into custody in Illinois.

Geyser was found sleeping on the ground with a man at a Thornton's truck stop in Posen, the Posen Police Department confirmed early Monday to NBC Chicago. She is set to be extradited to Cook County Jail Monday night.

Posen is about 25 miles south of Chicag

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