It seems that the bank which is owned largely by the royal family is under investigation by German and US tax authorities with regard to aiding tax evasion by use of Liechtenstein's highly private banking laws.
The bank is LGT Group, and it is (in turn) looking into prosecuting the former employee who sold the data to prosecutors. That data, on a DVD, was sold to German tax authorities and led to the German and US authorities' inquiries.
Liechtenstein has positioned itself strongly as a private banking enclave in the past 10 years, with the return to near-absolute monarchy as part of the "selling" point of privacy. Strong words are being thrown by German politos, including referring to Liechtenstein as a "rogue state." It will be interesting to see how this plays out over the next months and years.
"Liechtenstein's head of state, Prince Alois, said on Thursday he wanted to smooth differences between the two nations and end the "ping-pong game" between Berlin and Vaduz."
Links:
Liechtenstein bank says records passed to Germany have 1,400 client names - International Herald Tribune
FT.com / Companies / Financial services - Focus of inquiry shifts to Swiss bank
Germany-Liechtenstein Tax Evasion Scandal Shifts Focus