A judge has denied the petition for conditional release for one of the two young women who were convicted in the 2014 Slender Man stabbing of a classmate in Wisconsin.

Thursday’s ruling comes after two days of testimony regarding Morgan Geyser’s mental health. 

Geyser, 21, was found not guilty by reason of mental disease and was initially sentenced in 2018 to a maximum of 40 years of state mental health supervision.

Geyser has been in the facility for nearly a decade, but despite Thursday’s ruling, her defense attorney Anthony Cotton said Geyser will try again in six months.

Anissa Weier listens as former teachers testify during her trial in Waukesha County Court, in Waukesha, Wis, in September 2017. (AP/Milwaukee Journal-Sentinel)

Geyser and Anissa Weier were 12 years old when they stabbed another girl, Payton Leutner, to appease the fictional horror character Slender Man back in 2014. 

Prosecutors said Geyser and Weier lured Leutner to a wooded area in Waukesha after a sleepover in May 2014. Geyser stabbed Leutner repeatedly as Weier urged her on, prosecutors said. 

Both Weier and Geyser told authorities they felt they had to kill Leutner to become Slender Man’s “proxies,” or servants, and protect their families from him.

Leutner was left for dead but survived the attack after she crawled out of the woods and was found by a bicyclist. 

Weier, who was also committed in 2017 for the attack, was granted conditional release in September 2021 and was required to receive outpatient psychiatric treatment and subjected to GPS monitoring.

“Slender Man” started with an online post in 2009, as a mysterious specter whose image people edit into everyday scenes of children at play. He is typically depicted as a spidery figure in a black suit with a featureless white face. He was regarded by his devotees as alternately a sinister force and an avenging angel.

The Associated Press contributed to this report.

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