Acting Secretary General of Bangladesh Nationalist Party (BNP) Mirza Fakhrul Islam Alamgir has convened a meeting of the secretary-generals of the 20-party coalition partners to discuss ‘a united campaign’ in the municipal elections.Assistant Office Secretary Shamimur Rahman Shamim said the meeting would be held at the office of the BNP chairperson at Dhaka’s Gulshan at around 11am on Saturday.