I think LE we will get more details when they examinate cctv / surveillance system in JH bulding /movie theater/ parking lot area, etc
He was probably filmed somewhere like Anders Breivik was.
ps: One year since the norwegian tragedy on 22 July 2011
Good point. Anniversaries of other massacres are important in the minds of these mass murderers.
Timothy McVeigh chose April 19th to blow up the Murrah Building because it was the 2nd anniversary of the massacre at Waco.
The Columbine Massacre occurred on April 20th, five years later, I believe. The killers chose that date because they intended to kill more people than McVeigh.
It's possible Holmes' goal was to kill more people than Breivik. He couldn't wait until July 22nd because only opening night of The Dark Knight Rises promised a packed movie theatre.
Obviously just speculation on my part. I don't think it's out of the question. He did seem to copy many of Breivik's tactics.
JMO