Authorities in Europe and Australia announced a sweeping tax evasion probe Friday reportedly targeting Credit Suisse clients and top employees, as officials detailed arrests and the seizure of artworks and gold.

There was no definitive confirmation that Credit Suisse was the main target of the fraud investigations, run by at least four European countries and Canberra and apparently involving hundreds of suspects.

The Swiss financial giant simply confirmed that its offices in London, Paris and Amsterdam had been visited by local authorities on Thursday "concerning client tax matters".

"We are cooperating with the authorities", Switzerland's number two bank said in a statement.

Dutch prosecutors said dozens of people were being probed for tax fraud and money laundering, and that "administrative records" had on Thursday been seized from "a Swiss bank" which they did not name.

Two people accused of not declaring their savings have been arrested and two other suspects were interrogated, according to a statement from the National Prosecutor’s Office for Serious Fraud, Environmental Crime and Asset Confiscation (FIOD).

"Properties, and jewellery, an expensive car, expensive paintings and a gold bar", were seized from houses in The Hague and three other areas, the Dutch statement added.

Simultaneous criminal investigations were ongoing in Britain, France, Germany and Australia, according to The Hague.

- 'Senior employees' targeted -

Britain's Revue and Customs office said that it on Thursday along with international partners had launched a criminal probe into tax evasion and money laundering "by a global financial institution".

"The first phase of the investigation, which will see further, targeted, activity over the coming weeks, is focused on senior employees from within the institution, along with a number of its customers," the statement from London said.

It also made no mention of Credit Suisse, but said the investigation should serve as a stark reminder to institutions that aim to help clients evade tax.

Would-be tax cheats "need to wake up to reality and accept that attempting to hide wealth overseas, or within institutions, doesn't work."

- 346 people implicated -

In Australia, revenue and financial services minister Kelly O'Dwyer said investigators there had identified more than 346 people "with links to Swiss banking relationship managers" for possible tax evasion.

O'Dwyer also referred in a statement to corresponding probes in Britain, France, Germany and The Netherlands.

Australian investigators plan to "move quickly" against those who schemed to hide wealth, she said, noting however that some of those in the firing line will likely be exonerated.

The launch of a coordinated, international probe targeting an iconic Swiss bank came as a surprise to Bern, Switzerland's ATS news agency reported.

The Swiss attorney general's office was not aware of the operations and demanded a written explanation from Dutch officials in particular over the lack of cooperation, according to ATS.

Credit Suisse has previously been in the crosshairs of tax officials.

US regulators fined the bank $2.6 billion (2.4 billion euros) in 2014 for helping Americans evade taxes.

"Credit Suisse continues to follow a strategy of full client tax compliance," the bank said Friday.

source: AFP