the driver wore a projectile - like jacket under his body and a jacket , a rifle , an angel and a hoax pistols . two other men were found near the crime scene . the prosecutor confirmed that the intruder ' s dress was sprayed dark with blackened features as he committed the offence , which sparked foreign publications to draw comparisons to the joker , the villain from the batman series . " i have a mystery , " the killer advised the first student he encountered , after which he directly stabbed her , and started his rampage . another female day service resident attempted to disarm the woman while others locked the doors . the attacker stabbed employees struggling to carry children to safety .
Joker appears in the Batman series.