Can foreign authorities freeze my bank accounts without notifying me first?

Yes, in most jurisdictions, freezing orders in cross-border investigations are obtained ex parte—meaning without prior notice to the account holder. This prevents asset dissipation before enforcement. Under UK law, for example, a Worldwide Freezing Order can be granted within 24–48 hours of application. Switzerland, Luxembourg, and Singapore follow similar expedited procedures when responding to MLAT requests. You typically learn of the freeze only after it takes effect. Immediate legal intervention is critical to challenge the proportionality of the order and unfreeze legitimate funds, usually within 14–28 days through variation or discharge applications.