Guessing that the type of people sex offenders associate with, might not be quality human beings, just wondering if a guest of one, might have been leaving the home, spotted Jason and scooped him up?I found the above info on a crime site, can't recall which one but it seems to me the most likely scenario. Hopefully a full look at all the sex offenders, including one across the street, was made.
Even if such a person was not at the home of any of the other s/o in the area at that time, they may have noticed Jason at a previous time, inquired about him, then waited for the opportunity to circle the neighbourhood and get him.
speculation, imo.