The staff at the office declined to answer questions.
The Hong Kong government said in a statement that its Inland Revenue Department has taken note of the recent release of the documents and will take "necessary actions" based on any information it gets. It will not comment on individual cases or disclose the course of action because of secrecy provisions in Hong Kong tax law, the government said.
Denials And Backlash
Credit Suisse and HSBC, two of the world's largest wealth managers, on Tuesday dismissed suggestions they were actively using offshore structures to help clients cheat on their taxes.
Both were named among the banks that helped set up complex structures that make it hard for tax collectors and investigators to track the flow of money from one place to another, according to ICIJ.
Credit Suisse CEO Tidjane Thiam, who is aggressively targeting Asia's wealthiest for growth, said his bank was only after lawful assets.
Speaking at a media briefing in Hong Kong, he acknowledged the bank uses offshore financial structures, but only for very wealthy customers with assets in multiple jurisdictions and did not support their use for tax avoidance or allow them without knowing the identities of all those concerned.
"We do not condone structures for tax avoidance," he said. "Whenever there is a structure with a third party beneficiary we insist to know the identity of that beneficiary."
Separately, HSBC said the documents pre-dated a thorough reform of its business model.
Both banks have in recent years paid large fines to U.S. authorities over their wealth management or banking operations.