Shooting starts around 10AM MT (12 noon ET, 16:00 UTC)
El Paso Police tweet 'active shooter': 10:03 AM MT
8chan /pol/ manifesto post: 10:15:20 AM MT (12:15:20 ET, 16:15:20 UTC)
POSTED AT LEAST 12 MIN AFTER SHOOTING STARTS
4chan reposts screenshots manifesto: 12:32:07 PM MT (14:32:07 ET, 18:32:07 UTC)
8ch /pol/ manifesto posts have a file named "P. Crusius - Notification Letter.pdf"
I HAVEN'T SEEN ANY POSTS OF THIS DOCUMENT ANYWHERE.
This timeline does not make sense unless an innocent P. Crusius made a disastrously unwise shitpost or had a confederate post during the shooting. Could also be some another anon was SWATting Crusius via 8ch /pol/.