I am not exactly sure what defines "documented" in this context, (JCs and kangaroo court type hearings by their nature have little in the way of paper trail), but I am sure many who have experienced this situation, (many are on this board), could speak to it.
In my own experience, I know of at least 5 individuals from 3 congregations where their alleged crimes for child molestation were never investigated by police, and the alleged criminals are free roaming in the congregations. This simply would not happen if the parents felt free to speak about the matter to the authorities. The reality is the parents are fearful that they will lose their social environment if they do so. That type of unnatural fear is paralyzing, and is created, fostered and sanctioned by that environment itself.
This is purely anecdotal, however the situation is no different from one where a very good friend of mine was removed from his position as elder, (and as a consequence treated as a pariah in the congregation and forced out of it by default), for suing a fellow "sister" for literally fraudulently taking his life savings from him, (over $1M). This "sister" was found criminally guilty in federal court and is serving 7 years in federal prison, yet she was never JC'd and remains in good standing. This friend of mine is now 60+, broke, and having to work 3 jobs just to keep up expenses. He will never have a retirement. He was a very successful person prior to this, and pretty much my idol as a young person.
Such is the pattern of the kangaroo court known as "Theocratic Justice".
d4g