The probes represent a challenge for Chief Executive Officer Tidjane Thiam as he reshapes Credit Suisse to focus on wealth management and weighs options to increase capital depleted by fines for past misbehaviour. In 2014, Credit Suisse, Switzerland's second-biggest bank, pleaded guilty and was fined $2.6 billion by US authorities over charges it helped wealthy Americans evade taxes. It has also settled tax dodging cases in Italy and Germany.