A Supreme Court appeal against his conviction by farmer Patrick Quirke, who was jailed for the murder of DJ Bobby Ryan will be heard in December.
The appeal was due to go ahead this morning but had to be rescheduled due to "difficulties" which have arisen, Chief Justice Donal O'Donnell said.
Quirke lost his appeal in the Court of Appeal which refused to overturn his conviction.
But earlier this year, the Supreme Court agreed to hear a further challenge on two grounds which it said were matters of general public importance.
The first relates to the extent of any requirement to identify what is being searched for when applying for a search warrant.
The second relates to the discretion of the Director of Public Prosecutions to call expert witnesses during a trial.
Quirke, of Breanshamore in Co Tipperary, was jailed in 2019 for the murder of Mr Ryan, who was a DJ, also known as "Mr Moonlight", in June 2011.
The prosecution said he killed Mr Ryan in order to rekindle an affair with Mr Ryan’s girlfriend, Mary Lowry.
The Supreme Court appeal will now begin on 12 December.
