Addressing a media conference in Lucerne, Ermotti also said

he hoped there would be an investigation into Credit Suisse's Group downfall, which prompted his bank's takeover of its Swiss rival as part of a rescue orchestrated by the Swiss authorities.

He said UBS was on track to close the transaction within three months from its March 19 announcement.

(Reporting by Noele Illien,; Editing by Tomasz Janowski)