Assuming someone was uploading child porn isn't really a good thing to do. Unless you hear that from Hish, do not spread rumors how someone shared child porn. It's not a fire you want to play with, or throw mud on someone's name, not knowing anything about it. However, if there is a real suspicion, that someone shared a child porn, why deleting his account and ban him? Instead, do what you MUST do, report to authorities, submit IP logs, files and whatever that can be used as proof, and do the only good thing possible.