Other targets included a Masonic lodge, authorities said.
Rémy Daillet-Wiedemann was already accused of having organized the kidnapping of an eight-year-old girl kidnapped from her grandmother’s home in April.
Made in the name of the mother of the child who had lost custody, it turned out to involve a network of far-right sympathizers that the authorities had placed under surveillance.
The girl was eventually collected safely in Switzerland and French police issued an international arrest warrant against Daillet-Wiedemann, who was living with his family in Malaysia.
He was forcibly returned to France and arrested when Malaysian authorities deported him for exceeding his visa in June.
He was imprisoned in eastern France in this case.
The new allegations have since emerged and involve many in the same extremist circle.
Daillet-Wiedemann’s lawyer, Jean-Christophe Basson-Larbi, called his client a political prisoner.
He said Daillet-Wiedemann only calls for a peaceful end to the political system and maintains his faith in French justice despite the charges against him.
In the 2000s, Daillet-Wiedemann was a local politician in southwestern France who supported the Centrist Democratic Movement.
He was then reportedly banned from the party, before becoming more far-right.
He has gained followers with videos calling for a “popular coup,” claiming face masks are “scientifically unnecessary” and calling for the destruction of 5G networks.
He has pledged to run for president in France.