Story goes he call a radio host Ray Hadley first, then Ray Hadley called one of his sources and let him know she was a victim.
I think she was one of the first… so likely targetted and then the rest were to confuse the scene and make it look random (like Lee CHild's One Shot).
There was a map I saw yesterday with the times and locations of the attacks in the shopping centre… unfortunately, can;t find it now.
https://www.msn.com/en-au/news/other/hadley-s-harrowing-text-from-victim-s-dad/ar-BB1lCTqR