A Swiss court has denied a request by a US client of Credit Suisse for more time before Swiss tax officials can hand over confidential client data to US authorities, Reuters reported.

The ruling does not name the Swiss bank, the client, or even the client's legal representation, but a court spokeswoman told the news service that the ruling applies to data Credit Suisse handed over to Swiss officials recently.

The US and Swiss governments are seeking to resolve a dispute over how wealthy US citizens have used secret accounts in the Alpine state to allegedly hide their money. Already, a number of Swiss banks, such as UBS, Julius Baer, Credit Suisse and Wegelin, have ceased to provide offshore banking services to US nationals.

Credit Suisse last month said it submitted account data to the Swiss tax office. Switzerland and the US are discussing a settlement, which is believed to involve Swiss banks paying a fine and handing over data in order to escape prosecution in the US.

To view an analysis of how the erosion of Swiss bank secrecy will force changes in the country’s banking sector, click here.