Because he was a known paedo in the area, simple really. No we do not know which is why my post started with i believe
Nothing wrong with keeping it in the media, i do have objections about how they go about doing that, just because it's a paedo this time doesn't mean it will be next time, we've seen that before!
If they know he has info then surely to be able to say that, they must know what the info is, therefore they have no real need to speak to him.