The student, Andrey Emelyanenkov had a quarrel with his Basic Safety teacher, Sergey Danilov this morning.
He then waited for the school break between lessons to attack.
As soon as other students left the class, Andrey brought out the knife and launched the attack.
As the teacher lay in a pool of his blood, the unrepentant student took photos of the dead body and posted it online.
See the graphic photos below.
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