French presidential front runner Emmanuel Macron has filed a legal complaint after his far-right rival Marine Le Pen implied he had an "offshore account in the Bahamas".

The complaint referred to comments Ms Le Pen made in Wednesday night's TV debate between the anti-EU, anti-immigration candidate and her centrist, pro-EU rival, widely dubbed the most brutal in French presidential history.

With three days to go before Sunday's second round run-off, the French saw Mr Macron as the debate's outright winner, snap polls showed. Some commentators suggested Ms Le Pen was seeking to position herself as pugnacious "head of the opposition" ahead of her likely defeat on Sunday.