#usdt #eth #btc #p2p My account is Lien marked

I sold some USDT to a buyer. Two days later, I received a message from my bank stating:

"Dear Customer, Your A/c is Lien marked for an amount ***** based on LEA instruction."

This amount is inaccessible to me, meaning it's frozen. I contacted my bank, and they informed me that this was due to a police request related to fraudulent activities. However, I haven't committed any fraud. The bank branch doesn't have further information, and they mentioned that I would receive a letter detailing the problem soon. When I asked the buyer for identification, they initially sent someone else's Aadhar and PAN. Upon my insistence, they eventually provided their original identification documents, which matched the name on the bank transaction. What steps should I take to resolve this complaint against my bank transaction?

if you know anything about this please help me to solve this problem it would so helpful