I have to agree too. There is way too much delay on the ID. MSM, police captain, and students alike.
Too much time has passed. Too many involved, too many saw the shooter, yet still no ID on the shooter, no leaks from witnesses, no ID reports from the media.
Based on this lack of ID, it would seem to point to an unknown shooter, or someone that was not connected to the campus. Then again, I know as much as anyone else here.