AN Oireachtas committee wants to question Minister for Communications Pat Rabbitte following a row with industry regulator ComReg.
ComReg has fined An Post €12m for failing to meet next-day delivery targets. The State company plans to challenge this in the High Court.
ComReg chairman Alex Chisholm refused to outline to the Oireachtas Committee on Communications and Transport how the fine was calculated, as the issue is the subject of a court action.
After the meeting, committee chairman Tom Hayes said it was considering inviting Mr Rabbitte to appear before it to "clarify the issues raised today".