The official, speaking on condition of anonymity to discuss the allegations, said intelligence agents detained the six in three widely scattered regions, including the Alps, Brittany and near the Belgian border. He said the plan to target the French president appeared to be vague and unfinalised but violent.
Authorities released no further details about the six suspects and did not say if they were suspected of working together or separately.
French presidents have been targeted several times over the decades, including in 2002 when a far-right sympathizer tried to attack President Jacques Chirac on the Champs-Elysees Avenue in Paris during Bastille Day celebrations.
The suspected plot was uncovered days before US President Donald Trump and dozens of other world leaders are due in France for commemorations this weekend of the signing 100 years ago of the November 11 armistice that ended World War I.
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