Retired IAS officer I V Subba Rao has appointed the secretary to Vice President M Venkaiah Naidu. The Prime Minister’s Office cleared the appointment a day on which Naidu assumed charge as the 13th vice president of the country. N Yuvaraj, Andhra Pradesh cadre IAS officer of 2006 batch, will be the private secretary to Naidu. Rao, a 1979 batch IAS officer of Andhra Pradesh cadre, retired from service as special chief secretary last year. He held several important posts in Andhra Pradesh and later served the UNESCO.