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Mexico's president has called for reflection after a 15-year-old student opened fire in a middle-school classroom, hitting a teacher and two other students in the head before killing himself.
The first major school shootings in Mexico shocked the country, and President Enrique Peña Nieto said in a televised address that the nation should reflect on the issue.
Peña Nieto said late Wednesday that "these are incomprehensible acts that shake our hearts and require us to engage in reflection."
The security spokesman of the northern state of Nuevo León said shooter was declared dead and his family has decided to donate his organs.
Spokesman Aldo Fasci also said there was no evidence of bullying involving the boy.
Authorities are investigating how surveillance video of the classroom shooting was leaked.
