Chris Aguilar, 16, spoke little during his initial court appearance in Phoenix, while loved ones of Michael Montoya, 16, broke down into sobs.

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.

A 16-year-old student at a Phoenix, Arizona, high school has been charged with fatally stabbing another student in a classroom. The Arizona Republic reports that Chris Aguilar, who is enrolled at Maryvale High in the Phoenix Union District, has been charged with second-degree murder.