Dec. 21 (UPI) -- A Wisconsin judge sentenced one of two teenage girls involved in the "Slender Man" stabbing to a 25 year commitment at a mental health facility.
Waukesha County Circuit Judge Michael Bohren ordered 15-year-old Anissa Weier remain under state supervsion for 25 years from the date she and Morgan Geyser stabbed their friend Payton Leutner 19 times and left her to die in some woods after a sleepover in 2014.
Bohren also ordered Weier be sent to Winnebago Mental Health Institute for at least three years before she can seek supervised release.
Last year a jury agreed Weier shouldn't be held criminally responsible for her role in the stabbing due to mental illness.
Weier and Geyser, who was diagnosed with early stages of schizophrenia, carried out the stabbing as part of a plot to become proxies of the fictional Internet character Slender Man, who they believed would kill their families if they didn't comply.
The defense had requested she be committed for 10 years, arguing 25 years is twice as long as she had been a live at the time of the stabbing.
Since her arrest Weier had been held in a West Bend juvenile jail on $500,000 bail.