i have a discord server with some friends, and semi recently someones friend joined who was apparently a 14 year old girl. We were kicking her because she was too young to join as our server is pretty NSFW and me and most of the people on there felt uneasy about it. fast forward a few days and shes back, and so is this guy who always kinda came off as "off" to me. anyway he plays games with this girl for hours on end, and keeps getting in private voice chats with her. hes in his 20's. he even waits for her to get back from school and that is when he would get online. yesterday some of our users recorded a conversation he was having with the 14 year old girl and he was saying some VERY pedophiliac things, talking about fucking her, having a meetup and gangbanging her.... sending her porn. he was even posting dick pictures in our discord main chat in hopes she would see. I dont have to go into full detail. anyway he actually posted his personal info on the server months before, i have his facebook and i am wanting to expose this guy to his family and friends as i know he is still messaging this girl since we have banned them both.
The rough spot i am in is the admins deleted his messages where he said what his name was so i cannot provide proof that it is him. what can i do?