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

Chris Aguilar, 16, has been charged with murder in the stabbing death of Michael Montoya II. Aguilar had a 4-inch knife, court records said.

More: Maryvale High student accused of fatally stabbing boy charged ... Richard Obert has been covering high school sports since the 1980s for The Arizona Republic. He also covers Grand ...

PHOENIX — The suspect in a stabbing that left a student dead at Maryvale High School in west Phoenix is in custody, Phoenix police say. Phoenix police officers responded to a stabbing call at Maryvale ...

Two students were involved in a stabbing at Maryvale High School, resulting in one death and another in custody.

Maryvale High School in west Phoenix is currently under lockdown after an incident in a classroom that injured a student.