Credit Suisse CEO Tidjane Thiam did not know about the Swiss bank’s espionage scandal. This is reported by the Swiss newspaper SonntagsZeitung, which managed to get hold of the preliminary results of internal investigations at the institution. Credit Suisse was discredited when it came to light that a former top bank manager of the Swiss bank was spied after switching to Swiss competitor UBS. Private detectives were commissioned by the bank to shadow the former chief executive of the Iqbal Khan asset management arm. Khan left Credit Suisse last summer after an alleged conflict with Thiam. The financial group is said to have hired three private investigators to investigate whether Khan wanted to lure bankers away from his old employer. The espionage assignment came from operational director Pierre-Olivier Bouée. He resigned earlier because of the issue. He would have acted alone.