The abstract of a paper titled ‘Investigative Journalism and Scandal Reporting in the Nigerian Press’ by Muhammad Jameel Yusha’u:

Using interviews conducted with Nigerian journalists, this article explores Nigerian journalists’ understandings of investigative journalism, and whether they use it to investigate the allegations of corruption scandals against various public officeholders. The results show that Nigerian journalists have a fair understanding of investigative journalism. However, they do not fully agree that it is being practiced. The results also show that clientelism is a feature of journalism practice, and one of the factors that impedes the practice of investigative journalism. The research has identified the challenges militating against the practice of investigating journalism in order to uncover the cases of corruption scandals. Such impediments include poor remuneration, bad working conditions, corruption within the media, and the relationship between publishers and politicians.

The paper is here. If you don’t have online access to journals you can go here for a summary.