The Labour Party chairman says there is another context to the primary care centres row which led to the resignation of Roisin Shortall.
However Colm Keaveney says it is not possible to articulate this publicly at the moment.
Deputy Keaveney has written to Labour TDs, Senators and councillors following a meeting with party leader Eamon Gilmore.
In the letter Mr. Keaveney says the Tanaiste is considering how best to discuss this ‘context’Â with party members.
It adds that a meeting of the Central Council will be convened in early November.
The document also appeals for confidentiality.
It follows weeks of controversy over the Health Minister James Reilly and his role in selecting primary care centres and their locations.
Minister Reilly has been forced to clarify his involvement in the selection of a site in his own constituency and the relationship he has with the owner,who is a Fine Gael supporter.
Yesterday the Tánaiste and Labour leader Gilmore met with Minister Reilly and the Health Service Executive (HSE).
Afterwards he told the Dáil he was assured there was no ministerial involvement in the selection of the site.
Fianna Fail has described the contents of the letter as extraordinary.
But speaking this morning Labour Junior Minister for Housing Jan O’Sullivan said she backed the calls for unity.
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