The niece of defeated far-right French presidential candidate Marine Le Pen has announced she is leaving political life, at least temporarily, citing "personal and political reasons".

Marion Marechal-Le Pen had been seen as a rising star of the nationalist and anti-immigration National Front party.

She is one of two politicians in the outgoing lower house of parliament affiliated with the party.

Ms Marechal-Le Pen said in a letter published in a regional newspaper that she will not run for re-election in June to represent her south-east Vaucluse district.

The 27-year-old, who is the granddaughter of National Front co-founder Jean-Marie Le Pen, is also said to be stepping down from a regional council where she leads the main opposition group.

On several occasions, Ms Marechal-Le Pen found herself in political conflicts with her aunt and in disagreement with the policies of her party.