The girls were reportedly in contact with a French Isis commander on the Telegram app.
Leader was speaking at an event for the opening of a high-speed line in Charente.
Fillon had been seen as the most likely candidate to face off against extreme-right leader Marine Le Pen.
Ireland 19-9 France, Scotland 29-13 Wales
Marine Le Pen, Emmanuel Macron and Francois Fillon all have chance of entering the Elysee Palace.
Women are prohibited from wearing the Islamic face veil in public in these countries.
French presidential hopeful and En Marche! founder made the comments just metres from Number 10.
French politics has witnessed a profound change in rhetoric towards Russia.
Her rival Francois Fillon has been plagued by scandal but Emmanuel Macron is ascendant.
What would an anti-EU, anti-US, pro-Russia France look like under Marine Le Pen?
The man was charged with public indecency.
"We all know what they are capable of in terms of reprisals," said director of Sciences Po institute.
Front National leader Marine Le Pen takes second run at French presidency and steps out father's shadow.
En marche candidate expected to face-off against Front National leader Marine Le Pen in 23 April election.
Around 400 people set bins on fire chanting "cops, rapists, murderers" in support of assaulted man.
Protesters in the 18th District in northern Paris set piles of rubbish on fire in the streets while riot police threw tear gas canisters, which were thrown back at them.
The Front National leader said France should not punish the UK for leaving the EU.
The underlying issues affecting the disadvantaged suburbs have gotten worse in the past 12 years.
Le Pen attacked Italy on immigration at the site where French soldiers once fought back against fascists.
Local authorities said they were searching for a missing family of nine that had been swept away.
The prosecutor has been investigating claims Fillon's wife was paid for work she didn't do.
Marine Le Pen would look to remove France from the single currency in six months if she is elected.