if he's done it before, then he'll do it again and again and again until he is stopped. Let the police find the other parents in their investigation. It is now your responsibility to protect ALL children from this sicko. Please for the love of all children REPORT HIM IMMEDIATELY! (by the way the authorities monitor this site and so don't be surprised if they show up at your doorstop to get the whole story--it would be in your best interest to contact them before that happens).