Michael Adoboli faces four charges of fraud and false accounting . The accountant at Swiss bank Zurich was arrested last week . UBS says it has lost $ 2.3 billion in unauthorized funds . Adoboli has not yet made a confession to the charges .
Kwaku Adoboli faces four charges involving fraud and false accounting . The trader at Swiss bank UBS was arrested last week . UBS says it has lost $ 2.3 billion in unauthorized trading . Adoboli has not yet entered a plea to the charges .