DAVAO CITY – Leaders of the Indigenous Peoples Political Structure of the Mandaya tribe from two barangays in Mati City questioned the recognition of interim tribal officials, saying it violates a National Commission on Indigenous Peoples memorandum that allows only the Commission en Banc to confirm an IPS formally.Datu Vidal Mapinogos Jr. and Datu Simplicio Mendoza Jr. of the IPS, representing five Mandaya clans, said Barangay Councilor Errol A…