Le Pen has "no proof" Macron has hidden Bahamas account

Two young men put up decorations ahead of the visit of French far-right leader and presidential candidate Marine Le Pen in Ennemain, northern France, Thursday, May 4, 2017. Le Pen's election poster reads "Choose France". (AP Photo/Michel Spingler) (The Associated Press)

Supporters of far-right presidential candidate Marine le Pen wait for her near a portrait of the candidate in Ennemain, northern France, Thursday, May 4, 2017. Le Pen and centrist candidate Emmanuel Macron face on in Sunday's runoff vote, with the latest polls suggesting Macron is well ahead. (AP Photo/Michel Spingler) (The Associated Press)

French presidential election candidate for the En Marche ! movement Emmanuel Macron, right, visits the VOA glass-making company during a campaign trip in Albi, southwestern France, Thursday, May 4, 2017. French centrist Emmanuel Macron has already achieved an immense task: a former outsider with little political experience, he is now the front-runner in France's presidential race, banking on the promise to reform the country through radical pro-business measures and pro-European policies. (Eric Feferberg/Pool Photo via AP) (The Associated Press)

Far-right French presidential candidate Marine Le Pen says she has no proof her centrist rival Emmanuel Macron holds a hidden bank account in the Bahamas.

Le Pen raised the issue during their heated pre-runoff TV debate on Wednesday when she alluded to a rumor circulating on social networks.

Macron's camp said the former investment banker was victim of a "cyber misinformation campaign," adding they could take legal action.

Asked Thursday on BFM TV whether she was formally accusing Macron of having a secret offshore account, 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."

Le Pen and Macron face off in the presidential runoff Sunday.