Hadama Traoré had wanted to organize a demonstration of support for the author of the attack at the prefecture. He was placed in custody on Wednesday.

A rally scheduled for Thursday in Gonesse, in support of the author of the killing of the Paris police headquarters, was banned Wednesday by the prefecture of Val-d'Oise. The initiator of the rally, Hadama Traoré, a political activist from Aulnay-sous-Bois, in Seine-Saint-Denis, was placed in custody Wednesday night for "threats and acts of intimidation on a person exercising a function public or collective utility "," threats of crimes against people "and" contempt ", told AFP the prosecutor's office in Bobigny, a confirmed information to Europe 1.

His home was searched and an investigation entrusted to the Departmental Security. "The demonstration planned in Gonesse in support of the assassin of the police headquarters is an infamy and an insult to the memory of our police officers.I spoke with the prefect of Val-d'Oise: the gathering will be banned" Wednesday morning's Interior Minister Christophe Castaner wrote on Twitter.

He wanted to "restore the truth" on Mickaël Harpon

Christophe Castaner had also announced his intention to alert justice following remarks by the organizer of the event. "I asked that the hateful remarks made by his organizer be denounced to the public prosecutor, on the basis of Article 40 of the Code of Criminal Procedure," said the minister, still on the social network. In a message posted on Facebook, Hadama Traoré claims that the author of the killing, Mickaël Harpon, "is not a religious extremist" and calls for a rally in front of the town hall of Gonesse from 13H to 15H Thursday.

In another message, the activist says he wants to "restore the truth" on Mickaël Harpon, ensuring that he suffered at work because of his disability. "It's all this context that explains why he cracked," he adds. In his prohibition order, taken to "prevent disturbance to public order", the prefect of Val-d'Oise believes that the event "would actually aim, under the guise of 'communicate differently' on Mickaël Harpon , to support him by relativizing the act committed (...) "