An explosion took place Wednesday morning in a building in Saint-Leu-la-Forêt in the Val d'Oise.
It was caused by a tenant who allegedly handled chemicals.
This man is, according to the police, a "black supremacist" known to territorial intelligence.
In Saint-Leu-la-Forêt in the Val d'Oise, firefighters intervened Wednesday morning after an apartment explosion, which triggered a fire and the evacuation of all the inhabitants of the residence.
The unintentional explosion was caused by one of its occupants who allegedly handled chemicals.
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These various chemical ingredients suggest that the tenant of the apartment was looking to make one or more explosive devices.
This is the main hypothesis of the investigators.
This 36-year-old man is well known to the police services and in particular to territorial intelligence: he campaigns for the constitution of a black nation.
"He's a black supremacist, he doesn't hide it," a police official told
For now, no referral from the anti-terrorism prosecution
The man sustained serious injuries to his hands.
His partner, who was also in the apartment at the time of the explosion, is currently in police custody.
The two of them are going to have to explain to the police why they had these chemicals in their house and what they were planning to do with them.
For the moment, the national anti-terrorism prosecution has not taken up the case and the thirty or so residents of the residence were able to return to their accommodation during the day.