You know, just like every other news story like this that happens, the smartest thing to do is wait a couple of days to let the law sort out what happened.
Trying to say what happened and why is just conjecture at this point, because nobody really knows.
Besides................remember, it took a couple of days to get all the facts about Aurora, and because they didn't have all the information and reported it too early is why CNN and FOX messed up on the USSC ruling on the ACA, as well as messed up in their reporting of the Boston marathon bombers, because they were trying to be first and didn't wait for all the information.
Give it a couple of days..............none of the victims have life threatening injuries, they are all being taken care of by the doctors, and the person who committed the attack has been shot dead.
So.............there's really no rush to say what happened, unless you're looking to spread false information to inflame others.