the driver wore a bullet - proof vest under his clothes and a pack containing a rifle , an axe and a fake firearms . two other knives were found near the crime scene . the prosecutor confirmed that the intruder ' s face was painted white with blackened eyes as he committed the crime , which led international press to make comparisons to the joker , the character from the batman series . " i have a question , " the killer instructed the first employee he encountered , after which he immediately stabbed her , and started his rampage . that black day care worker attempted to disarm the killer while others locked the doors . the killer stabbed employees trying to carry children to safety .
Joker appears in the Batman series.