Ban Ki-Moon, UN secretary-general, will meet state governors on Sunday, which begins his two days official visit to Nigeria. On Monday, he is scheduled to meet President Muhammadu Buhari, according to an itinerary released by the UN Information Centre, in Lagos. The UN chief is to discuss a New Nigeria – the Role of Sub-national Governments, and also lay a wreath in memory of persons casualties of UN House bombing in 2012. The event is also part of activities to commemorate the fourth anniversary of the incident. Ki-Moon is also to have a lunch with members of the business community, where he will be discussing`The role of Nigeria business and the economy in implementing the Sustainable Development Goals and addressing climate change”. He is also billed to take part in series of activities, including a visit to immunization centres and a dialogue on democracy, human rights and countering violent extremism, before departing Nigeria later on Monday.