Wilson Perumal Raj claimed he had helped the Super Eagles rig games -

Convicted match-fixer Wilson Perumal Raj recently released a book in which he claimed he had helped the Super Eagles rig games in order to ensure they finished top of their group.

The NFF have already responded to the reports with condemnation, with general secretary Barrister Musa Amadu having described them as "hogwash", while also threatening to take legal action for defamation.

NFF spokesperson Ademola Olajire has now confirmed they have received a letter from FIFA stating their intentions to investigate the claims, although he would reveal no more than that.

"We have forwarded the letter to our match-fixing officer Dr. Mohammed Sanusi and NFF's Integrity Officer Dr. Christian Emeruwa. All enquiries should now go to FIFA as I explained in my earlier release on the matter," Olajire said.

Musa had earlier this week said: "Perumal's statements are a hogwash and have no legs to stand on. We have ordered the book itself with a view to digesting it and looking critically at it.

"If the book impugns on the image of the Nigeria Football Federation, our players and the larger image of our dear country, we will take appropriate action."