I can’t help but wonder if the shooter called his mother just before the shooting. There are reports that a man talking on a cell phone opened the fire exit and propped it open and that the shooter then came in shortly thereafter.
The shooter’s car was parked a short distance from that exit. If the man with the cell phone and the shooter are one and the same, i.e., he went out the door to get dressed up and get his guns and then returned, who was on the other end of that call?
With his mother telling the police they had the right guy, then she knew something. It seems she was contacted very soon afterward (unlike Trayvon's dad) so if that was what happened, all they'd have to do is check his phone for the last person called. Very, very horrific.