UNAT held that UNDT had erred in law by upholding the decision to summarily dismiss the staff member, which was taken in violation of the requirements of adversarial proceedings and due process. UNAT held that, while the use of statements gathered in the course of an investigation from witnesses who remain anonymous throughout the proceedings, including before UNAT, cannot be excluded as a matter of principle from disciplinary matters, a disciplinary measure may not be founded solely on anonymous statements. UNAT ordered rescission of the contested decision to summarily dismiss the staff...