(copying this over from the last thread because I'm too lazy to re-type it)
IMO, a kid in school is going to feel safe (as well they should!).
So here we have a situation where there are many kids, parents, volunteers and staff milling about. Kyron sees these "strangers" and even though he doesn't necessarily know them, logic would tell him that these people are "ok". After all, the school itself is allowing them to be around and interact with all the kids. A perfectly reasonable assumption on his part.
Knowing he's inside a safe place, surrounded by people he knows are there to watch out for him, his guard is going to be way down. In an environment like this, I have no doubt most adults wouldn't consider the 'stranger danger' element as they would elsewhere (which btw could explain why it seems no one noticed anything unusual). So why should we expect a 7 year old child to be any more vigilant??
Given these circumstances, someone with intentions on taking a child would already have a huge advantage, for not only the kids but adults as well would never in a million years expect that something like this could happen.
Now all that is left is for that predator to find a vulnerable child, one who is separated from the group, away from an adult, close to an exit.
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I believe it was a child predator, someone who is NOT an RSO (i.e. has never been caught). Someone who is either connected to the school (however peripherally that may be) and/or the neighborhood. Possibly even had children or siblings who attended the school, maybe even a former student. Whoever this person is, I think he caught kyron separated from others and close enough to the exit that he was able to lead him out of the school without being noticed (obviously).
Because of what I wrote above (that Kyron would have felt secure in this environment), I don't think he would have fought off this person until it was far too late. I also don't believe he would have necessarily had to recognize this person in order to be lured away. I won't repost what I put on here last night; it creeped me out just to type it. Suffice to say, I can see where someone could very easily entice him to open the exit door and even follow to a waiting vehicle.
Now this assumes that Kyron wasn't a specific target, meaning someone didn't go there specifically to take him, just a vulnerable child. IF he was targeted by someone who knew him and was going after him, my thoughts are that it's someone connected to his hobbies, activities, clubs, etc., OR that of his parents or brother.
I realize this isn't a popular theory, but to me it's the one that makes the most sense.