but were there signs missed. >> how about just before the attack? >> really chilling, brooke. i think we have a graphic of the social media post we found, based on official law enforcement familiar with the investigation. it says i hope people call me insane. wouldn't that be a big ball of irony. yeah, i'm insane. the only thing you people do after these shootings is hopes and prayers or keep you in my thoughts and wonder why these keep happening. this was a post law enforcement officers believe was sent just before the shooting. again, it shows, the question we had, did this person snap, was it a crime of passion or violence? it appears he had the time to sit and telegraph what he was about to do on social media, which, again, is so very troubling. it's not going to provide comfort to the victims now, but, again, something that law enforcement will be looking into, or were there other signs out there. and, again, other messages, possibly, the shooter was trying to send. >> josh campbell, thank you. >> thanks. we have more breaking news