I wouldn't wait for investigations to be complete. Instead, I would take part in it and provide any information required. As you haven't done anything wrong, it would help if you liaised with the bank and the police to get to the root of this. Get actively involved.
Somehow managed to get email from branch manager and emailed twice to the police station registered that case. Its far from my place. No one replied to my email and i clearly specified i'm willing to provide all details of transactions from and to my account. Also called to their number and provided account details. The sad fact is they don't even talk english or no one know i their office. Somehow managed to inform about the issue and their reply was not overwhelming. Just make an enquiry regarding same to an advocate and he told its usually happen anytime in India . He know tons of guy lost their account while doing business and no followup from anyone after blocking accounts.