I am trying to so hard to figure out why this guy did it. Apparently he did over over some quibble with his girlfriend, but I refuse to believe such a trivial issue resulted in the deaths of 32 people. So his psycho stream of thought went "Oh my girlfriend pisses me off, I have to kill her...oh I killed my girlfriend, I have to kill the RA now...Oh I killed two people, might as well kill more".
But no, this was apparently premeditated, very well planned out. WHAT was this guy's motive? It doesn't make any sense. Now they say they can't even identify the guy because fingerprints don't come up with anything, his face was disfigured when he died, and he carried no ID.