Anything is possible and whatever possible is plausible and whatever plausible could have happened because something like it plausibly happened in the past and if it’s plausible it might have happened and if it did happen, then…
So, down the hill we slide into wherever.
For me, I went as far as I could go. We have the one eye witness that identified them that I could find.
My concern is: Did they kill the wrong people?
Are they scapegoats?
If not, then the story we hear is likely true enough.
If they are scapegoats, THEN you get into the land of Odd.
But until then, I have to stop my investigation at the eye witness.
Anything further gets us thinking all kinds of stuff.