The indicators are:

• no blood at the scene
• windshield not broken in a car supposedly shot through
• the bodies fall oddly and look like mannequins
• there is a box in place in a stairwell that is there before he got there. He passes it once and then comes back to open it and reloads from it.
• there were "terror" drills running at the same time as the incident and people from the drills involved in the so-called capture.
• the guy was captured in minutes in a random place without even having a description of him broadcast.
• new laws all ready to go in NZ - these things take time, not overnight.

This is what I got a couple of days ago when I went to look on some sites I use. I did not bother to investigate on my own, but you can easily find this.