Credit Suisse AG (>> Credit Suisse Group AG) declined to provide immediate comment. Credit Suisse senior executive , Elsa Chen , who is working at the bank 's Taiwan branch , is under investigation for possible illegal trading related to the June purchase of local firm Hermes Microvision by the Netherlands ' ASML Holding for which the Swiss lender served as an advisor . " During the merger and acquisition activities , there were some trading irregularities , and the stock exchange has detected this irregular ##ity , " said Chang Chieh - Chin , a spokesman for the Taipei District Prosecutors Office . Credit Suisse declined to comment .
Credit Suisse senior executive , Elsa Chen , who is working at the bank 's Taiwan branch , is under investigation for possible illegal trading related to the June purchase of local firm Hermes Microvision by the Netherlands ' ASML Holding for which the Swiss lender served as an advisor . " During the merger and acquisition activities , there were some trading irregularities , and the stock exchange has detected this irregular ##ity , " said Chang Chieh - Chin , a spokesman for the Taipei District Prosecutors Office . Credit Suisse declined to comment .