Yes and No. Yes if he is low level enough and made all transactions at internet cafes (then save the coins in his offline wallet). He could also have traveled outside the country using devices with no connection to himself to access the internet and save in the offline wallet. No if he was too big. The alphabet jackets (especially) FBI will publicly talk about big fish they take down. This leads me to believe they are more than happy to take out players who are opposed to the state for much less. If you get into crypto you should read and research then reread everything and ask so many questions on forums people get annoyed. If you open anything on a network/device connected directly to you then your coins are not safe. Way back when bitcoin was about $60 I lost 1.09btc in instawallet. I only had beginner knowledge and made all that from randomly using faucets and getting them for free. I haven't touched crypto since as like this thread has said, if you have a bank account it can go to zero anytime/any day. something as simple as ammo is a great investment.