Police Scotland and the Crown Office are investigating how £600,000 raised by the SNP for independence campaigning has been spent.

In a Beth Rigby interview due to air at 9pm on Sky News, Ms Sturgeon also admitted the race to replace her had been a "less than edifying process" so far, as she urged those vying to replace her "not to throw the baby out with the bathwater".

Asked if she had heard whether she or her husband Peter Murrell will be interviewed by police, Ms Sturgeon responded: "No. I wouldn't comment on any ongoing police investigation and I am not going to comment on this one."

The SNP has previously denied any wrongdoing around party finances.

In one of her last interview's as the country's leader, Ms Sturgeon also denied the probe played any part in her sudden resignation last month.

And she stood by her decision to stand down - even as she acknowledged some of the turmoil it has caused.

Mr Murrell, who had been the party's chief executive since 1999, quit at the weekend after being embroiled in a row over claims he misled the press over membership numbers.

His departure came shortly after that of media chief Murray Foote, who said there had been a "serious impediment" to his role.

Ms Sturgeon admitted the race to succeed her had at times been bumpy, amid criticism of the candidates and calls for greater transparency.

But she said it was right for her to go, saying after eight years as leader she had become so dominant in Scottish politics she was becoming a "barrier to succession".

"I wouldn't be standing down if I didn't think that was necessary after 16 years in government, but also protecting the ingredients of our phenomenal electoral success."

Asked about a significant fall in paid-up support since 2021, with the loss of about 30,000 members, Ms Sturgeon said a change in leadership was a "moment for renewal".

"I'm not suggesting that this is not a difficult process and at times, it has been a less than edifying process," she said.

"And what I'd say to all of those standing to succeed me as leader... is remember that I am standing down from a party that hasn't lost an election in Scotland since 2010.

"This is a moment for refresh, renewal, change, but let's not throw the baby out with the bathwater. We have the trust of the people of Scotland and we've got to make sure we retain that trust."

Asked if she could have stayed on until the next general election she replied: "Yeah, I could have done but at what cost to myself?"

She said that in politics "maybe because it's tended to be more men than women doing it, there has been a tendency to cling on" and she did not want to do that.

"I think anybody should only ever do a job like this if you can give it everything and that's not just 100% of your work - a job like this you should give everything of yourself. You're never off duty.

"I’m not complaining about this, it is part and parcel of what the job is about. I can just open my door and go for a walk with a friend on a Saturday morning, I can’t just go for coffee. All the things people take for granted are not there for you. and I think there is only so long anybody can and should do that."