Germany's biggest bank, Deutsche Bank, hired detectives to spy on its employees including a member of its supervisory board, managers and a shareholder, German magazine Der Spiegel reported.
The bank launched an internal inquiry at the end of May into potential breaches of data privacy law in connection with the affair, Spiegel said in its latest edition to be published Monday.
Chief executive Josef Ackermann promised a "zero tolerance" approach over the affair at an annual general meeting of the bank.
Detectives "kept an eye on the movements of these people, and made inquiries as to who they were meeting and when", said Spiegel, which had seen a report by a law firm on the matter
Read more
Showcase your ideas, writing, and personal site to readers.
Make a secure online donation to