Yes, a bank can freeze your account without prior notice in specific legal or security situations. While RBI guidelines generally require banks to give notice for issues like KYC non-compliance, no prior warning is required for:
- Suspected cybercrime or fraudulent activity.
- Orders from law enforcement agencies like the Police, Income Tax Department, or Enforcement Directorate (ED).
- Compliance with court orders or investigations under the PMLA or CrPC.
In such cases, the freeze is often immediate to prevent the movement of suspicious funds.