Terduga penyerang, diidentifikasi sebagai Mohamed M.,<ref>{{Cite web |last=Leicester |first=John |last2=Petrequin |first2=Samuel |last3=Schaeffer |first3=Jeffrey |date=2023-10-14 |title=France raises terror alert after teacher killed, two others wounded in school attack |url=https://www.smh.com.au/world/europe/teacher-killed-in-french-school-stabbing-attack-20231014-p5ec6j.html |access-date=2023-10-14 |website=The Sydney Morning Herald |language=en}}</ref>adalah seorang [[Orang Chechnya di Prancis|Chechnya]] yang lahir pada tahun 2003 dan pindah ke Prancis bersama keluarganya pada tahun 2008.<ref name="G" /> Dia terdengar meneriakkan "[[Takbir|Allahu akbar]]" selama penyerangan.<ref>{{Cite web |last=Leicester |first=John |last2=Petrequin |first2=Samuel |last3=Schaeffer |first3=Jeffery |date=13 October 2023 |title=A teacher is dead and 2 people are wounded after a France stabbing attack that echoes 2020 killing |url=https://apnews.com/article/france-school-stabbing-arras-878f42a5df4a873ca7bd80a173cc9097 |access-date=13 October 2023 |website=AP News}}</ref> Tersangka dikenal oleh dinas keamanan Prancis karena keterlibatannya dengan Islamisme radikal; dia ditangkap oleh polisi.<ref>{{Cite web |date=13 October 2023 |title=Teacher killed in France school stabbing |url=https://www.bbc.com/news/world-europe-67101089 |access-date=13 October 2023 |website=BBC News}}</ref> Tersangka adalah mantan siswa sekolah tersebut dan saudaranya juga ditahan.<ref>{{Cite web |last=Rossignol |first=Pascal |last2=Foroundi |first2=Layli |last3=Rose |first3=Michael |date=13 October 2023 |title=Teacher killed in Islamist attack on French school, Macron says |url=https://www.reuters.com/world/europe/teacher-killed-knife-attack-school-northern-france-bfm-tv-2023-10-13/ |access-date=13 October 2023 |website=Reuters}}</ref>
