French presidential candidate Marine Le Pen says she has no proof her rival Emmanuel Macron holds a hidden bank account in the Bahamas.
The far-right candidate raised the issue during their heated TV debate on Wednesday when she alluded to a rumour circulating on social networks.
Centrist Mr Macron's camp said the former investment banker was the victim of a "cyber misinformation campaign", adding that they could take legal action.
Asked on BFM TV whether she was formally accusing Mr Macron of having a secret offshore account, Ms Le Pen said: "Not at all.
"If I wanted to do so I would have done it yesterday. I've just asked him the question. If I had proof, I would have claimed it yesterday."
Ms Le Pen and Mr Macron face each other in the presidential run-off on Sunday.
Meanwhile, Mr Macron's campaign team has delivered a final message – warning voters that if they do not want to be like the US or Britain they must go to polling stations and make the right choice.
His team posted a video clip on Twitter featuring American and British citizens expressing regret about their votes in favour of Donald Trump and Brexit.
The footage ends with a message: "This Sunday France will have to make a choice. The worse is not impossible."
The latest opinion polls show the pro-EU Mr Macron holding a strong lead over his rival.
Ms Le Pen wants to implement protectionism measures if elected and said the British economy has benefited from the Brexit vote.
