We need to know who the victims were. If they were Hispanic, then it was likely a crime of passion or it was gang related. If the victims all were white then it is most likely Islamic Terrorism.
What I find interesting is that he left his gun on the Macys cosmetics counter. Why would he do that? That gun is traceable. The only explanation is that he does not care if he is caught.
The other issue is that all the victims have their ID with them. No woman goes shopping in a mall without her purse. Therefore, the families and friends all have been notified of the deaths, and yet no identification of the shooter yet. Which could make this into a random shooting.
It will also be interesting ( and I am going to find out) if there is police presence at all the major malls today, which would indicate that the police think this shooter could reappear. I am going to drive by the Tacoma Mall today, so I am going to see if there is police at all the entrances.