Fianna Fáil has not yet received any formal notification of Bertie Ahern's intention to leave the party.
It emerged last night that the former Taoiseach is to quit the aprty after being a member for 40 years.
The party's National Executive was due to consider expelling him this coming Friday.
Fianna Fáil Justice Spokesman Dara Calleary said that Friday's meeting will go ahead as planned.
"We were in a frame of mind for preparing for next Friday's meeting, preparing for the information that had to be given to our National Executive meeting," he said.
"We are where we are now, and once we receive formal correspondence … as I said, there are still other individuals and other issues to be decided on Friday."
The Mahon Report published last week found that Mr Ahern did not tell the truth in his dealings with the tribunal.
Writing in today's Sunday Independent, the former Taoiseach said that the past week has been extremely difficult and emotional.
He said that he was hurt and disappointed by the findings of the Mahon Tribunal, which were published on Thursday.
In a surprise move even for the party's current leadership, he went on to state that the best thing he can do for Fianna Fáil is to resign as a member, because he would hate to be a source of division in the party.
He stated that the decision to quit the party is in no way an admission of wrongdoing and he repeated his rejection of the tribunal's findings.