Alright I need some serious advice... (Patreon)

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My best friend started dating a guy who is the older brother of our dead friend that we grew up with. This guy started asking weird questions about my daughter which prompted my best friend to take his phone, in which she discovered messaged between him and an 11 year old little girl. I have his address and phone number. What do I do with it? My best friend beat him, locked him in the bathroom and called the police on him, yet he isn’t in jail...

this man attempted to prey on my kid.

I need advice...