BNP leaders Asaduzzaman Ripon, Tabith Awal and Ishrak Hossain today collected nomination papers of the party to contest mayoral posts in the Dhaka north and south city corporation elections scheduled for January 30. Ripon and Tabith collected nomination papers for Dhaka North City Corporation polls while Ishrak for south, Sayrul Kabir Khan, a staff of BNP Chairperson Khaleda