More than 1,000 Japanese companies and individuals including SoftBank Group Corp. Chairman and CEO Masayoshi Son are mentioned in newly released leaked documents on tax havens, at a time when managing wealth through offshore tax shelters has drawn criticism worldwide.

The names, found in materials obtained by the International Consortium of Investigative Journalists (ICIJ), also include Takeo Hirata, a former head of the Cabinet Secretariat section that was in charge of promoting the Tokyo Olympics and Paralympics.

The documents, dubbed the Pandora Papers by the Washington-based ICIJ, are leaked internal files from 14 entities, such as trust companies and law firms specializing in establishing and managing firms in tax havens.