http://www.thedenverchannel.com/news/31312016/detail.html
But Arapahoe County Senior Deputy District Attorney Richard Orman's written response to the defense motion said inaccuracies in the Fox News reports about the notebook indicate that whoever provided the information didn't know the facts of the case.
Instead of law enforcement sources "leaking" details about the notebook, Orman wrote that the news media may be getting information from "hoaxers, fraudsters," or maybe news reporters fabricated the information by "creating fake 'law enforcement sources' out of whole cloth."
I recall the Aurora police chief stating that someone claiming to be him had made it on the air of a news outlet, and cautioned the media - perhaps the very day of the shooting. I don't think the DA's argument can be easily dismissed.
imo