the central african republic. >> this evening, a joint address between the pope and president uhuru kenyattaomorrow, there is a mass being held at the university of nairobi. it will be on giant screens to people gathered nearby, up to 1.5 million people expected to converge in the park to watch that live address. security will be tight. roads will be closed in terms of car traffic and lorries. around the park, people will have to make their way on foot very early in the morning to be sure of getting a viewing spot. in the afternoon, there is a consultation over the environment, with the pope meeting officials from the u.n. environment program. is a crucialya place in that respect, because it has a lot of natural but, more importantly, a lot of wildlife, but, obviously, that is dwindling, with elephant poaching top of the agenda there. friday, the pope will meet with various officials and local people in a largely catholic quarter of the capital. city of: the u.s. chicago is bracing for more protests after a video showing a white police officer shooting a black teen 16 times has been released

. >> president uhuru kenyatta and other members of the national security council have categorically denied the existence of an extra-judicial killing program. president kenyatta has also faced questions at the international criminal court - accused of involvement in the deaths of hundreds of political rivals. the case was dropped because the kenyan government refused to hand over vital evidence. he and other senior kenyan ministers refused to answer our questions. instead we put the allegations directly to the kenyan police. >> to my knowledge, i don't think that there is any program in the national police service which deals with elimination. >> what is your response when people say that the government are behind those killings? >> these are issues, which are under investigations. >> can you at least deny that it was the kenyan government's involvement? >> no, i can't comment on that because, at my level, there are things which i cannot come out and speak because i don't speak on behalf of everybody. i speak on behalf of the national police service. >> these accusations are against the po