Quote from: Findingnemo on Today at 05:01:10 PM

But seizing funds without enough proof is also against the law right, I am not sure how a bank cannot say which of your transaction got charged back!

It's not up to the bank to decide if there are proofs or not for an account to be frozen or suspended in this case.

Once a police department finds or is tipped of something unusual happening, a person involved in what they think is a suspicious activity they will investigate and take this matter over a prosecutor, if he decides there are enough proof he informs the bank and the bank has nothing else to do than obey.

As for disclosure of evidence in such a case, most countries have laws against it.
At this point the bank can't help the OP, his the only chance is to try and speed up his process, by requesting a meeting with his local branch of the police or try to contact the financial ombudsman in order to verify if his account is indeed frozen following a police request and is not a stupid mistake.