I don't know the exact law in the US, but it is similar.
A bank can freeze your account for suspected fraud, but they will try everything they can to contact you soon after to verify. They know that regulators will come after them if they don't have good customer service around this (plus good customer service can turn this into a customer loyalty win - customers like knowing their bank is watching out for them as long as there is only minor inconvenience).
Bank failure is sometimes a thing though. If the bank fails they probably don't have enough money to give everybody theirs back. You are insured for some amount ($250,000 last I checked) so the average person doesn't need to worry, but if you have more than that in your account you are out of luck. This would be once case where you can't access your money for a few weeks. You should have an emergency account with a second bank just in case - but this is a rare problem. This problem applies to all countries in some way, though the exact way it goes down can change.
I think every other case would be ordered by a judge. Real banks are regulated carefully. People have learned over the years of banking that they can be trouble if they are badly run and taken steps.