we heard like popping and we didn t know what it was and then i look out the window and there s this guy throwing like a pipe bomb at all the cars and then he came in the they like started blowing up and shooting everywhere in the cafeteria and then you just hear them laughing and running up the stairs two young men who are according to students members of a group called the trench coat mafia barged through to the school they were wearing masks and black coats and they opened fire with rifles a gang within the school that a lot of witnesses have described as the trench coat mafia and uh they have been described as an odd group of people but never ever violent the first description by the way of the suspects was they they were wearing long coats dark hats and some sort of masks 