A French appeals court has upheld a ruling denying an Algerian woman citizenship after she refused to shake the hand of a senior official.
The woman, who has not been named, said her "religious beliefs" prevented her from shaking the hand of the male official in the citizenship ceremony.
A government ruling said it showed she was "not assimilated into the French community" and denied her citizenship.
She appealed, but France's highest administrative court upheld the ruling.
The Algerian woman has been married to a French man since 2010.