A senior banker from Nomura Holdings Inc.'s Hong Kong arm has been prohibited from leaving mainland China, in a move seen as part of an investigation into Bao Fan, a prominent Chinese tech dealmaker, The Financial Times reported Monday, citing people familiar with the matter.According to the report, the travel restriction on Charles Wang Zhonghe, chairman of the Japanese securities firm's investment banking for China at Nomura International (Hong Kong) Ltd., is limited to leaving the mainland, and he is not in custody.The move has raised concerns among the foreign business community in Chin…READ FULL ARTICLE