Bank account locked

I use to trade virtual crypto currencies at paxful p2p website. They provide measures to protect your virtual currencies via escrow, but one has to make sure himself for received money. As any other market scammers are here also who asks you to release the virtual currencies and provide fabricated screenshots and bank transfer messages. I'd never released any currencies until I make sure that money is received or not by logging to my bank account. Issue : I sold crypto asset to someone and received money from him - trade was okay there. But few days later I received a call from someone asking questions about the received money which I used to buy crypto asset again. The person claims that it's a fraud case and money he provided for some other use - I provided imps reference and profile of the person I traded(received money from) then nothing. Next thing I see that my bank account show lien amount equivalent to the trade done. Upon asking banking manager - he said that they received request from cyber crime department. Don't know what to do next....