An artificial intelligence-powered weapon detection system failed to pick up the handgun a 17-year-old Nashville, Tennessee, student used in a school shooting Wednesday that killed a 16-year-old girl, ...

Anti-hate analysts quickly identified dozens of pages believed to have come from the shooter, filled with calls for violence and racist comments.

In the months leading up to the shooting, Kara's husband wrote an email to the school condemning guns found on campus and emphasizing the need for metal detectors.