Perhaps more demons of the violent type than before.
I read one theory which had plausible connection. Recollecting the Pakistani connection to the shooter outside the CIA parking lot in '93.
Has it been shown to be a single sniper yet?
The cops are saying that something like 9 of the bullets are from the same gun, and they can't tell about the others because the bullets are too fragmented in those cases. I guess several people could be sharing one gun, but Occam's Razor says it is only one shooter.