More old news that is new to me

"[John] Lott...noted that the Aurora [Colorado] shooter, who killed twelve people earlier this year, had a choice of seven movie theaters that were showing the Batman movie he was obsessed with. All were within a 20-minute drive of his home. The Cinemark Theater the killer ultimately chose wasn’t the closest, but it was the only one that posted signs saying it banned concealed handguns carried by law-abiding individuals." -- The Facts about Mass Shootings

The above is an interesting fact that I had never heard mentioned before. As far as I know, there is no proof that the shooter deliberately chose the Cinemark because of its posted "no guns" signs. But what I find bothersome is whether there was some ulterior motive for reporters never mentioning that fact.