Slender Man case: Girl who tried to kill classmate with friend when all were 12 sent to mental hospital for 25 years

Both girls told detectives they felt they had to kill their classmate to become the character Slender Man's "proxies", or servants, and protect their families from him. All three girls were 12 years old.

One of two Wisconsin girls who tried to kill a classmate to win favour with a fictional horror character named Slender Man has been detained for 25 years in a mental hospital.

Anissa Weier, 16, pleaded guilty in August to being a party to attempted second-degree intentional homicide, but she claimed she was not responsible for her actions because she was mentally ill. In September, a jury agreed.