What we did find out was that he was a nut, depression and PTSD, numerous contacts with police and while evaluated for his mental issues was not forcibly committed.
What we also found out was that he was a regular at the same bar.
Another case where known nut with mental issues slipped through the cracks in the system and was able therefore to legally purchase a gun.
Apparently he just snapped and decided to go out in a “blaze of glory” at the same bar he frequented and no doubt got turned down a lot.
No political motivation whatsoever to the shooting is being reported.