Dilemma

OK...it has been brought to our attention that our new next door neighbor is a convicted child molester. Yep you read it right. He was part of a sting operation and was caught and through that sting they found a 13year old girl he had molested. My dilemma is what to do about my kids. What do I say to them about this man?? Do I say anything at all?? Do I make my other neighbors with young girls aware of the man?? I just have a lot of questions don't I. It worries me to have this man living next to us when I have an 11 year old girl who is budding as some might put it. His wife is nice ( still can't understand why she is still with him), we have met and talked and he has 2 young boys who ride the bus with P and T. P is good friends with the younger of the two boys. So Please if you have any thoughts or comments on this all is welcome. I just have no idea and you never think that your going to have some pervert living next to you . Thanks peoples!