Le Pen, who is head of the former National Front party - now National Rally (Rassemblement National) revealed on Twitter her shock and anger at being ordered to undertake a psychiatric assessment.
The unusual summoning is in relation to Le Pen having tweeted out gruesome propaganda images from terror group Isis that showed the bodies of people having been executed by the so-called Islamic State.
In March Le Pen was charged with circulating "violent messages that incite terrorism or pornography or seriously harm human dignity" and that can be viewed by a minor.
And as part of their investigation it appears magistrates in Nanterre near Paris have ordered Le Pen to visit a psychiatrist for an expert assessment. ...