Not certain to what you refer.
However, and it's MOO.....
As I've stated before, I would not point a finger at any one individual, for to do so would be folly.
It appears to me to be a LOT of illegal activity, of all sorts, occurring in the region.
I think that what we have in the case of A & L is either a serial killer, or one who may very well become a serial killer, OR, a murderer who had something to hide, someone in the local area who stood to lose his status, fame and/or fortune as a result of one or both of the girls becoming aware of some illegal activity in which he was engaged, to include involvement in child sexual activity of some sort or participation in what appears to be a rather active local drug trade OR a flat out meth head or drug addict under the influence that acted in a blackout rage that day.
I do sense the possibility though, that the killer in this case works in, or is involved in, the public sector and/or holds a position of leadership or status among his peers. Possibly the courts, LE, fire and rescue, local school, scouting, or a man of the cloth.
This murderer is either 1. a lucky dog, 2. a crafty, well studied killer, or 3. someone with enough experience from his daily work/life that he had the knowledge needed to kill, and walk away, in broad daylight. MOO