The father of murdered LVF leader Billy Wright mounted a legal challenge to the handling of the inquest into his son's murder in the Maze Prison.
Mr David Wright, a retired bar manager from Portadown, sought a judicial review of Coroner John Lackey's decision refusing him access to statements made by two senior prison officers.
The father of the man known as "King Rat" believes the statements could shed new light on how three INLA prisoners were able to remain undetected while they carried out the murder on December 27th, 1997.
The High Court in Belfast was told the INLA trio - Christopher McWilliams, John Kennaway and John Glennon - were subsequently convicted of the murder after surrendering to prison authorities and handing in the murder weapons.
Mr Seamus Treacy, QC, for Mr Wright, said the killers used improvised wire cutters to cut through a security fence and get on to the roof of H-block Six before shooting Billy Wright as he sat in a van about to take him to the visiting area.
Mr Treacy said the Coroner's decision that Mr Wright was not a "proper person" to get the depositions of the two officers was a denial of his human rights under Article 2 of the European Convention which guarantees disclosure of all documentation in order to establish that a proper investigation into a death is carried out.
Mrs Jemma Loughran, for the Coroner, said his view was that he had held an inquest and furnished certain documents to Mr Wright as the law required. But he withheld other documents relating to the police investigation because the release of them was a matter for the Chief Constable.
The judge adjourned the hearing for a week to enable the Coroner to reconsider his decision.