IAAF president backs Africa to host athletics ' major event in near future . Lamine Diack tells CNN that world championships are more affordable . Senegalese official says Senegal 's bid was important in the 2017 Olympics . so I had to find a way to rent a house , find a way to build up my own house , buy something else . He confident he will not be found guilty of accepting illegal payments .
IAAF president backs Africa to host athletics ' major event in near future . Lamine Diack tells CNN that world championships are more affordable . Senegalese official says Senegal 's bid was important in the 2017 Olympics . He confident he will not be found guilty of accepting illegal payments .