Chris Aguilar, 16, is accused of fatally stabbing Michael Montoya, 16, at Maryvale High School on Aug. 19. A knife was ...

Maryvale High School was one of two Phoenix Union High School District schools to pilot an advanced weapons detection system.

Chris Aguilar, 16, was charged with second-degree murder in the fatal stabbing of another student, 16-year-old Michael ...

Court documents reportedly reveal a possible motive in this week's deadly knife attack in a Maryvale High School classroom.