The brother-in-law of murder victim Irene White has warned that the people protecting the person who ordered her killing "no longer have anywhere to hide".
Ken Delcassian, the husband of Ms White's sister Anne, said he believes associates of the "mastermind" behind the murder are withholding "damning evidence". Today marks the 15th anniversary of the brutal murder.
"If these people think they aren't going to be identified they are sadly very mistaken.
"Irene feared she was about to be murdered and asked her friends to pray for her. Ironically, the people protecting her killer find themselves in the same position. They are living in fear of a murderer."
Two people have been convicted for the murder of Ms White, who was stabbed to death in Dundalk on April 6, 2005. However, the person who is believed to have ordered the killing has never been brought to justice.
It is understood gardaí in Dundalk are in the final stages of preparing an investigation file for the DPP and that this person will face a murder charge before the end of the year. Sources said there is "a lot of evidence" to incriminate the third suspect.
Ms White was stabbed 34 times in a frenzied knife attack at Ice House, her home on the Demesne Road.
Anthony Lambe was first convicted of carrying out the murder of the mother of three in January of 2018, while Niall Power also pleaded guilty to his part.
Power, who lived in Dundalk, presented himself to gardaí and confessed to the killing in January 2018 just hours after being informed that Lambe had pleaded guilty to the murder at the Central Criminal Court. Power described himself to gardaí as the "middle man" in the conspiracy.
In the years after Ms White's murder, her sister Anne Delcassian campaigned tirelessly for justice. She was terminally ill when Power and Lambe were convicted. She died in August 2019.
"This is not over simply because two men have been convicted," said Mr Delcassian.
"Even if justice isn't delivered to the person who ordered her killing in an open court, I would hope that the people in the locality where that person is living finally realise that there is a murderer among them and no longer tolerate his presence."
His late wife had compiled detailed documents throughout her lengthy campaign for justice for her sister.
He said there was also "explosive" material contained in a diary owned by Irene and Anne's mother, Maureen.
Maureen (Mo) was the first person to discover her daughter's body within hours of the killing. She died six months later. "Maureen made a diary entry about who she saw outside Anne's house that day," he said.
"We know who that person is and who they are related to. They should do the decent thing and come forward about what they know. An entire family has been wiped out because of this."