Right to fair hearing
Section 36(4)(b) · 1999 Constitution (2004 edition)
What Constitution says
(b) if in any proceedings before a court or such a tribunal, a Minister of the Government of the Federation or a commissioner of the government of a State satisfies the court or tribunal that it would not be in the public interest for any matter to be publicly disclosed, the court or tribunal shall make arrangements for evidence relating to that matter to be heard in private and shall take such other action as may be necessary or expedient to prevent the disclosure of the matter.
This is the 1999 Constitution as published in 2004. Later amendments aren't included yet, so a section may have changed since.
Original source
Official Gazette · CFRN 1999 official PDF · printed page 36–38. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections