We don't know that. It might show up here but this is only aggregated info so no way to know for sure:

https://www.cloudflare.com/transparency/

We could also watch PACER or state court records but those wouldn't show anything until a lawsuit is filed. Investigation details are rarely public.

Besides I have little doubt that the servers behind Cloudflare are about as anonymous as possible. The only hope for law enforcement is that the scammers messed up somewhere, like Ulbricht with his gmail address.