The Independent TD Mattie McGrath is to launch a High Court challenge against the constitutionality of the Government's Abortion Bill.
He said that he has lodged the injunction on the grounds that the Oireachtas has no right to vote on a Bill that contains provisions that have been put to the Irish people before in referenda and which they rejected.
Meanwhile, the Public Expenditure Minister has rejected the opposition's claims that last night's abortion bill debate was a shambles.
The Dail sat until 5am to deal with proposed amendments to the abortion bill - but the Fianna Fáil leader Micheál Martin said the government had not consulted opposition parties before arranging the late sitting.
The Dáil will now continue its discussions on the Protection of Life During Pregnancy Bill at 4.30 this afternoon.