The Taoiseach has said that latest report from the International Monitoring Commission (IMC) goes further than he ever has in linking the IRA to the Northern Bank raid.
Mr Ahern was speaking in the Dáil following a Cabinet meeting this morning to discuss the implications of the report.
When asked by Labour leader Mr Pat Rabbitte if the report had caused him to review his earlier statement that the robbery was the work of the IRA, Mr Ahern replied, "if anything, it will go beyond anything I ever said".
The report will be published by the Department of Justice on Thursday, he added.
Meanwhile, the Government has been accused of ambiguity on the issue of early release for the killers of Detective Garda Jerry McCabe.
Fine Gael leader Mr Enda Kenny said that a Government amendment to his party's Dail motion on the peace process fails to makes clear whether the McCabe issue is off the agenda or not.
He accused the Government of failing to stand up a previous statement by Mr Ahern in which he claimed the McCabe issue was off the negotiating table since power-sharing talks broke down in December.
Mr Kenny claimed there was "a clear difference of opinion between the Government and the opposition" on the issue.
The Fine Gael Private Members' Motion, which is supported by Labour and the Greens, is due to be debated in the Dáil this evening.
The motion blames the IRA for the Northern bank heist and condemns Sinn Féin for it attitude towards IRA criminality
It says it regards "with deep concern the recent comments by the Sinn Féin leadership regarding its interpretation of what constitutes criminality".
In an amended wording to the motion, the Government notes "the clearly expressed views of the Irish people that all paramilitary activity and criminality be permanently brought to an end".
But says "the Government's stated position that the question of early release for the killers of Detective Garda Jerry McCabe is not a matter for discussion in the context of such dialogue".