How long can a bank account be frozen?

Many of my clients often ask me the questions on how long does it take to unfreeze a bank account?

The clients contact me straight after being informed by the bank that the account is frozen and show me the bank letter. This letter is an official freezing order signed by the Swiss Federal Prosecutor and addressed to the bank. In fact the accounts are officially blocked. Furthermore, the prosecutor requests the client to provide the account documents, including the history of all transactions. The documents must be submitted within 30 days.

The client is very disappointed. The client just talked to the bank manager and the client does not understand why the bank did not inform him about the problems with the account. My client can’t believe that the bank is not protecting him. But you have to understand one thing- bank only follows the order received from the Swiss prosecutor. In the situation with account blocking by an authorities mandate, the bank will never take your side. No bank wants to lose its license.
It is a very standard case and the account could be already frozen for several months and the client is not aware of the situation.

As a fist and immediate step, the client wants me to run with him to the bank and to unfreeze the assets on the same day. But you need to understand this is not the right approach. This is a mistake that most of the clients int