The family of Sean Brown say they had a "very positive" meeting with Tánaiste Simon Harris in Government Buildings this evening, and they left him in "no doubt" about their ongoing campaign for a public inquiry into his murder.
Mr Brown was chairman of Bellaghy Wolfe Tones GAA in south Derry and was locking up the gates of the club when he was assaulted, abducted and murdered by a loyalist gang in May 1997.
The 61-year-old father of six was taken to a remote country lane outside Randalstown and shot six times.
Speaking after the meeting today, which last more than an hour, Mr Brown's daughter Siobhan said the Tánaiste had been "very empathetic" about their father's case.
She said: "We have made it known what we need."
Watch: Harris has been 'very empathetic' - Sean Brown's daughter
Today is the 28th anniversary of the killing and Mr Brown's 87-year-old wife, Bridie, attended the meeting.
Tánaiste commends Brown family on campaign
The Tánaiste commended Bridie Brown and her family on their tireless campaign for truth over the last 28 years and told them the absence of an effective investigation into his death is simply unacceptable.
Speaking after the meeting, Simon Harris said: "Today is the 28th anniversary of Sean Brown's murder and a stark reminder that the Brown family have waited far too long for truth and accountability.
"I reiterated this point, as I have previously, to the Secretary of State for Northern Ireland in a phone call with him last Friday. I say it again today and I will continue to use every channel available to me to pursue this matter.
"In the absence of an effective investigation into his death - which the UK government agrees has not yet taken place - the passage of time makes this increasingly pressing.
"Bridie Brown and her family have shown enormous strength in pursuing this case and I will continue to use my influence and that of the Irish government to bring about a resolution that is acceptable to the Brown family. They have waited too long."
GAA President Jarlath Burns, who was also part of the delegation, said he was there to support the Brown family and represent the support of "all GAA people".
He said he was "heartened" by what he heard from the Tánaiste.
Mr Burns said the Irish Government had lent its support "right from the beginning" and the campaign knew that "it will continue".
In April, Northern Ireland's Court of Appeal said a public inquiry should be established without further delay, but the British government's decision to appeal that ruling has left Mr Brown's family "deeply disappointed".
In the course of a now discontinued inquest it emerged that state agents were among 25 people linked by intelligence to his murder.
During the inquest, the family received a report which had contained wholly redacted black pages of discovered documents.
Lawyers for the family said: "Bridie just wants to know what are they hiding."
The UK Government has said it intends to appeal the order to the Supreme Court in London.
During an inquest it emerged that several agents of the British state were linked by intelligence to involvement in the murder.
It was the first time such information had emerged despite several previous investigations.
The inquest was stopped when the coroner ruled that the process was not able to properly deal with redacted intelligence material.
The coroner later suggested that a public inquiry was the only avenue which could properly hear such evidence in closed sessions.
