Unnamed girl was targeted by threatening posts on social network . Was taken home from Lone Hills Middle School in California , San Dimas . Investigators believe fellow students are posting the threats . In one message a user threatens to bring a knife to school and stab the girl .
Unnamed girl was targeted by threatening posts on social network . Was taken home from Lone Hills Middle School in San Dimas , California . Investigators believe fellow students are posting the threats . In one message a user threatens to bring a knife to school and stab the girl .