Some type of threatening behavior by one or more students prompted the schools to lockdown on Wednesday morning. Police ...

The horror inside the school cafeteria unfolded at around 11am Wednesday and was partially streamed online. Now it has emerged that police are probing a sprawling manifesto allegedly penned by ...

Rockville resident Alex (Andrea) Ye was arrested last year following an investigation after the FBI notified Montgomery County Public Schools about a 129-page "manifesto" authored by the teen.

Analysts with the ADL Center on Extremism "have located a manifesto and social media accounts believed to belong to the ...

Henderson’s diary — described by the Anti-Defamation League as a “sprawling manifesto” filled with ... acts of mass violence and other school shootings, including a massacre at a Nashville ...

The supposed 47-page manifesto included a layout of the Tennessee school, along with photos of the weapons he wanted to use and his thoughts about why he wanted to commit a shooting. His final ...