The leader of Northern Ireland's Democratic Unionist Party on Tuesday said the decision on whether to accept assurances secured by British Prime Minister Theresa May from the EU was a pivotal moment in the Brexit process, RTE reported.
Foster "will be talking to @theresa_may later," RTE London correspondent Fiona Mitchell said in a post on Twitter.
"Mrs Foster says huge decisions have to be made and this is a pivotal moment. Decisions will be taken over the day," the post said.
Two members of the Northern Irish party propping up Britain's minority government raised the prospect of delaying Tuesday's parliamentary vote on the Brexit divorce deal if more time was needed to scrutinise assurances secured from the EU.
British Prime Minister May signed up to three documents after last-ditch talks on Monday which she said were aimed at addressing the most contentious part of the divorce deal she agreed in November - the Irish backstop.
Democratic Unionist Party chief whip Jeffrey Donaldson told RTE that the party had not yet come to a definitive conclusion on how to vote, but that a delay "could be an option parliament may want to consider".
His party colleague Sammy Wilson told BBC Radio Ulster: "I think if the government wants to have full scrutiny of this agreement ...then one of the options it has is to put the vote off today. We wouldn't be adverse to that." (Reuters)