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 Chiu, who is based 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 acted as an advisor. "During the merger and acquisition activities, there were some trading irregularities, and the stock exchange regulator detected this irregular trading," said Chang Chieh-Chin, a spokesman for the Taipei District Prosecutors Office. Credit Suisse declined to comment.