Financier Ted Cunningham will find out today whether he has won an appeal against his convictions for laundering money stolen in the Northern Bank raid.
The 63-year-old from Farran, Co Cork is the only person who stands convicted in connection with the £26.5m robbery in Belfast in December 2004.
In April 2009, Ted Cunningham was jailed for 10 years after a jury found him guilty of laundering more than €3m from the Northern Bank robbery.
His trial heard that detectives uncovered STG£2.4m in a cupboard in the basement of the financier's home during a search in 2005.
He has brought an appeal against his conviction on the basis of a recent Supreme Court ruling on the issuing of search warrants under anti-terrorism legislation.
The ruling found the constitutionality of the warrant depends on whether it was issued by an independent person.
His lawyers say the judgment is relevant as the Superintendent who issued the warrant in Ted Cunningham's case was leading the investigation and could not be seen as independent.