The former HSBC employee who leaked sensational secret documents alleging the bank helped wealthy customers dodge millions of dollars in taxes warned Tuesday that the revelations are just the "tip of the iceberg".
The files created global shockwaves on Monday, spotlighting the financial dealings of the world's ultra-rich and prompting British lawmakers to launch an inquiry into the London-based bank.
The cache of files made public in the so-called SwissLeaks case includes the names of celebrities, alleged arms dealers and politicians -- though inclusion on the list does not necessarily imply wrongdoing.
Published at the weekend, the files claim HSBC's Swiss division helped clients in more than 200 countries evade taxes on accounts containing $119 billion.
Herve Falciani, an IT worker turned whistleblower, stole the files in 2007 and passed them to French authorities, but they had not been previously made public. The International Consortium of Investigative Journalists (ICIJ) obtained the files via French newspaper Le Monde and shared them with more than 45 other media organisations worldwide.
But Falciani said the media reports on the documents' contents were based on just a fraction of the files he gave to the French state.
"This is only the tip of the iceberg," the Franco-Italian told France's Le Parisien newspaper in an interview published Tuesday.

There's more than what the journalists have. Several million transactions (between banks) are also in the documents I transmitted. These figures could give an idea of what lies at the bottom of the iceberg."
The files were used by the French government to track down tax evaders and shared with other states in 2010, leading to a series of prosecutions.
Dubbed the "Snowden of tax evasion" and "the man who terrifies the rich", Falciani remains wanted on data theft charges, but France and Spain have offered him protection by refusing to extradite him to Switzerland.
Margaret Hodge, chairwoman of the British parliament's Public Accounts Committee, told the BBC that lawmakers were launching an "urgent inquiry" and would order HSBC to give evidence if necessary.
"Today's shocking revelations about HSBC further expose a secretive global industry serving a wealthy elite," she told the broadcaster on Monday.
The documents show that HSBC opened Swiss accounts for international criminals, businessmen, politicians and celebrities, according to the ICIJ. The revelations renewed calls for a crackdown on sophisticated tax avoidance by the wealthy and multinational companies. Tax avoidance is legal, but tax evasion is not.
"HSBC profited from doing business with arms dealers who channelled mortar bombs to child soldiers in Africa, bag men for Third World dictators, traffickers in blood diamonds and other international outlaws," the ICIJ said.
HSBC's reputation has been tarnished in recent years by a string of high-profile controversies, including oversight failures which meant Mexican drug traffickers could launder money through its accounts.
Shares in the bank were down 1.64 percent at the close of trading in London on Monday.
A range of current and former politicians from Russia, India and various African countries, as well as Saudi, Bahraini, Jordanian and Moroccan royalty, and the late Australian press magnate Kerry Packer were named in the files.
There were calls for a Swiss probe against the bank, which is already facing prosecution in France and Belgium.
Switzerland has so far only launched an investigation against Falciani.
Global fallout on Monday included a Belgian judge said to be considering international arrest warrants for directors of HSBC's Swiss division.
HSBC's Swiss banking arm insisted it has undergone a "radical transformation".
Franco Morra, the head of HSBC's Swiss unit, said the bank had closed the accounts of clients "who did not meet our high standards".
HSBC now has "strong compliance controls in place", he told AFP in an email, adding that the revelations are "a reminder that the old business model of Swiss private banking is no longer acceptable".
Notes in the leaked files indicate HSBC workers were aware of clients' intentions to keep money hidden from national authorities.
Of one Danish account holder, an employee wrote: "All contacts through one of her 3 daughters living in London. Account holder living in Denmark, ie critical as it is a criminal act having an account abroad non declared."
The files provide details on over 100,000 HSBC clients, including people targeted by US sanctions, such as Turkish businessman Selim Alguadis and Gennady Timchenko, an associate of Russian President Vladimir Putin. Alguadis told the ICIJ it was prudent to keep savings offshore, while a spokesman for Timchenko said he was fully compliant with tax matters.
Other individuals named on the list include designer Diane von Furstenberg, who told the ICIJ the accounts were inherited from her parents, and model Elle Macpherson, whose lawyers told the ICIJ she was fully compliant with UK tax law.

The central bank will try to acquire information on the Bangladeshi nationals who held accounts with HSBC's Swiss private banking arm, a top official said yesterday.
The British banking giant allegedly operated a giant tax evasion scheme via its Swiss subsidiary, HSBC Private Bank (Suisse).
The revelation comes after a former staffer of HSBC Private Bank, Herve Falciani, secreted away a list of accounts at the branch in Geneva and the conversations between the clients and the bank between 2006 and 2007.
Falciani turned the data over to the French government in 2008 and its tax authority launched an investigation. The Paris-based newspaper Le Monde obtained a version of the tax authority data, which covers accounts of 106,000 clients from 203 countries. These clients had deposits worth $102.05 billion at that time.
Among the countries was Bangladesh, which ranked 148 in terms of deposits. Around $13 million (over Tk 101 crore) were deposited with HSBC Private Bank by 16 individuals connected to the country, 31 percent of whom bore the Bangladeshi nationality or passport.
They had a total of 34 accounts, opened between 1985 and 2006, including seven offshore accounts.
Of the $13 million deposits, the maximum amount of money associated with a single client was $4.4 million (over Tk 34 crore). However, the report did not mention the name of the individual who had the amount.
It has not yet been established whether the amounts were laundered from the country.
 “We will ask for data on the Bangladeshis' accounts through the global network of Financial Intelligence Unit,” Mahfuzur Rahman, an executive director of Bangladesh Bank, told The Daily Star yesterday.
When contacted, Talukdar Noman Anwar, head of communications of HSBC Bangladesh, sent a reply quoting Franco Morra, chief executive of Private Bank Switzerland (HSBC).

“HSBC's Swiss Private Bank began a radical transformation in 2008 to prevent its services from being used to evade taxes or launder money. New senior management have comprehensively overhauled the business, including closing the accounts of clients who did not meet our high standards and ensuring we have strong compliance controls in place,” Morra said.
“We have no appetite for business with clients or potential clients who do not meet our financial crime compliance standards. These disclosures about historical business practices are a reminder that the old business model of Swiss private banking is no longer acceptable.”
The leaks have created a lot of hue and cry across the globe, as a host of prominent personalities kept their money with the super-secret Swiss banking system to dodge taxes in their respective countries. Among the South Asian nations, India topped the list with $4.1 billion deposited with HSBC's Swiss arm. India ranked 16th on the list in terms of balance, with the maximum amount associated with a client connected to India being $876.3 million.
The Swiss Leaks report say Pakistan is ranked 48 with $859.7 million against 314 client accounts. Nepal came in 116 with $54 million, Myanmar (Burma) 133 with $26.5 million and Sri Lanka 112th with over $58 million.
Switzerland itself tops the list with over $31 billion, followed by the UK with over $21 billion.

Bangladesh Bank yesterday instructed all banks to sharpen their watch on money laundering and terror financing amid the growing political violence.
Chief executives have to stay alert so that no banks can be used for terrorist financing, said Abu Hena Mohd Razee Hassan, deputy governor and head of the Bangladesh Financial Intelligence Unit (BFIU) of the central bank.
Hassan spoke at a meeting with the CEOs at the central bank where the heads of the money laundering prevention departments of different banks were also present.
He reminded the executives of the Anti–Terrorism Act 2009, which was revised in 2012.
“You have to strengthen your internal control to identify transactions being used for terrorism and violence,” he said.
The deputy governor also asked the banks to identify the districts and areas, which are prone to violence. The BFIU should be informed about the suspected transactions, he said.
Mahfuzur Rahman, executive director and deputy head of BFIU, also spoke.

The Chairman of the Board of Directors of Shahjalal Islami Bank Ltd. and former president of FBCCI A. K. Azad formally inaugurated the relocated Banani Branch of the bank as Chief Guest recently. Among others Vice-Chairman of the Board of Directors Alhaj Mohammad Younus, Directors Alhaj Engineer Md. Towhidur Rahman, Alhaj Md. Sanaullah Shahid, Alhaj Khandoker Sakib Ahmed and Managing Director Farman R Chowdhury were present in the opening ceremony.