The family of murdered Belfast man Robert McCartney have said they have confidence in the PSNI investigation into his death and are "encouraged and reassured" following a meeting with the Taoiseach.
Speaking after a meeting in Dublin today with Mr Ahern, Paula McCartney said the family completely disagreed with Sinn Féin chief negotiator Martin McGuinness's comments that the PSNI was not charging anyone to maintain the political pressure on republicans.
"We know that people have told police some information but what is actually happening is they're being told what to say and what not to say, so the full picture is not emerging," Mr McCartney's sister said.
"I don't believe that the PSNI haven't been proactive. What has to be remembered here is there was a forensic clean-up, there was intimidation of witnesses, and, given all these facts, we can see why the process is so slow."
Paula McCartney
She said that the reason the people Mr McGuinness believed could be charged were not saying what they had done was because they wanted "to go down as Irish volunteers and not psychopaths".
She also said the family did not believe their campaign was affected by Gerry Adams's call last week for the IRA to follow a political and democratic path.
"Our campaign has never been about disbanding the IRA, it's not in our interests to do that. Our only interest is for the murderers of Robert to be delivered," Ms McCartney said.
She said the family was "very encouraged and reassured" following their meeting with the Taoiseach. "We just asked him to make a commitment that this will be an issue, that he personally will not rest until it is resolved and I think he assured us about that."
The family vowed to carry on the fight for justice for Robert with a rally in Dublin and a vigil outside the pub where he was killed in Belfast.
"It's never entered our heads to give up, we'll never give up until these people are brought to justice," said Ms McCartney.
Paula McCartney was joined by her sister Claire and her murdered brother's partner Bridgeen Hagans for the meeting with the Taoiseach at Government Buildings.
The women said yesterday they plan to stage a "Justice for Robert" rally in Dublin at some date before the British general election on May 5th.
The McCartneys will also stage an afternoon vigil next Sunday outside Magennis's bar, where Robert McCartney was fatally stabbed on January 30th.
On Saturday the McCartneys will travel to Derry to support a rally organised by the families of James "Dee Dee" McGinley and Mark "Mousy" Robinson, who were allegedly fatally stabbed by IRA members in October 2003 and April 2001 respectively.
No one has been charged in connection with Mr McCartney's murder.
There were about 70 people in or about Magennis's on the night of the stabbing. More than 12 people, many of whom voluntarily went to the police following urgings from the IRA and Sinn Féin, were arrested but then released without charge.