The attacker who fatally wounded a teacher at a high school in Arras, northern France, had posted a video claiming responsibility before carrying out his action, a source close to the investigation said today.

In this, the Mohammad Mogutskov20 years of Russian citizenship but originally from Ingushetia, known to the authorities for Islamic radicalization, claims responsibility for the attack in the name of the Islamic State group (ISIS)the same source added, confirming information from the CNews network.

In this he also makes a “subtle allusion” to Hamas’s attack on Israel, it is clarified.

After 96 hours in police custody as part of the investigation launched by the National Anti-Terrorism Prosecutor’s Office (PNAT) for murder and attempted murder, Muhammed Mogutskov is due to appear before it within the day to face charges.

The killing of Dominique Bernard on Friday has shocked the country, and led to calls for tighter security measures at schools.