Invited Tuesday of Europe 1, Marc Trevidic returned to the attack of the Paris police headquarters.

Five days after the attack on the police headquarters of Paris, the investigation continues to understand the religious radicalization of Mickaël Harpon. Invited Tuesday of Europe 1, the former anti-terrorist judge Marc Trevidic believes that in France, "everyone is aware of the danger, but everyone does not see the extent of the phenomenon of radicalization."

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