Here is a PDF of 137 pages of the 141-pafe killer manifesto. I suppose the "authorities" have decided to shield us from the final four pages, for now. Since this document was sent to a TV station, I would assume that in a country of adults, with a First Amendment it would be in the public domain.
According to that, 7 cops showed up to this door. Not one asked to look inside the apartment and not one watched any of the youtube videos. Donutwatch at its finest.