PARIS, May 4 (Xinhua) -- A French prosecutor on Thursday opened a preliminary investigation into allegations that the presidential front-running contender Emmanuel Macron holds an offshore bank account, according to local media reports.
Earlier on Thursday, Macron lodged a legal complaint over allegations made by his rival Marine Le Pen in a televised debate on Wednesday that he held secret funds in a foreign tax heaven.
"I've never had an account in any tax haven. Le Pen is behind this. She has an internet army mobilizing to spread false information and lies," Macron told France Inter Radio.
Speaking to news channel BFMTV, Le Pen said that she had no proof her rival had an offshore account.
Hours before Wednesday's debate, an anonymous account posted documents on an internet forum allegedly showing the ex-economy minister had an offshore bank account.
The information was quickly distributed online.
In February, Macron's staff said their campaign had been the target of cyber attacks targeting databases and e-mail servers.