Scottish nationalist leader Nicola Sturgeon will include triggers for a second independence referendum in the party's manifesto for the 2016 Scottish election, the Sunday Herald newspaper reported.
The Sunday Herald said that Sturgeon had told the paper in an interview her Scottish National Party's (SNP) 2016 manifesto would set out triggers for a second independence referendum, though it did not immediately supply a direct quote from Sturgeon.
British Prime Minister David Cameron in May ruled out another independence referendum despite spectacular gains by Scottish nationalists in that month's general election, saying Scots had "emphatically" rejected a breakaway in last year's referendum.
Scots voted 55-45 against independence in a referendum last September but the May 7 general election showed the SNP had since gained support, taking 56 of Scotland's 59 seats in the Westminster parliament.
A vote to divide England and Scotland would amount to the break-up of the United Kingdom, the world's fifth largest economy.
When asked for comment on the Sunday Herald report, a spokesman for Cameron said: "The people of Scotland voted to remain part of the United Kingdom last year and we will see through our commitments to give them the extra powers."
When asked about the report, a spokesman for the SNP said: "There is no new story here."
"There are certain circumstances in which there may be a need for another referendum but that is ultimately for the people to decide," he added.
SNP leader Sturgeon has previously said there could only be another independence vote if Scots voted for a party which proposed one in a Scottish parliamentary election.
One is due in May 2016 but so far Sturgeon has refused to say directly whether she would include a referendum pledge in her manifesto.
After Jeremy Corbyn was elected on Saturday as the new leader of the opposition Labour Party, Sturgeon cautioned that if his party failed to show swiftly it could beat Cameron's Conservatives in the next national election then desire for Scottish independence would rise.
"If Labour cannot quickly demonstrate that they have a credible chance of winning the next UK general election, many more people in Scotland are likely to conclude that independence is the only alternative to continued Tory (Conservative)government," she said.
"The reality today is that at a time when the country needs strong opposition to the Tories, Jeremy Corbyn leads a deeply, and very bitterly, divided party."
Sturgeon has previously warned that if England voted to leave the European Union in a referendum on membership that Cameron has promised by the end of 2017, then Scotland could seek a second independence referendum if its people voted to stay in the EU.