Gerry Hutch will find out this morning whether secretly recorded audio will be allowed into evidence at his murder trial.
Mr Hutch is on trial for the murder of David Byrne, who was shot dead at the Regency Hotel in Dublin in February 2016.
The 10 hours of conversations, between Mr Hutch and the former Sinn Fein councillor, Jonathan Dowdall, were recorded as they drove to Northern Ireland one month after the shooting.
to allegedly meet with Republican contacts of Mr Dowdall’s one month after the shooting, the judges heard from both sides on whether the evidence should be allowed into the case.
Mr Hutch's defence claims it's inadmissible as it was obtained unlawfully and argues most of it was recorded outside the jurisdiction.
But the prosecution contends there’s no issue because the bug was deployed, removed and later downloaded on this side of the border.
The judges at the Special Criminal Court will make their ruling later this morning.