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Teenager Arrested for Terrorism in Treviso Italy

Police have arrested a 15-year-old boy from the province of Treviso whose profile emerged during monitoring of far-right supremacist circles.

On social media platforms, his posts were consistently xenophobic. At home, he allegedly possessed materials needed to assemble weapons and claimed he had already built one. These elements led police to arrest a 15-year-old Italian minor from the Treviso area. He is suspected of incitement to commit crimes and glorification of terrorist offenses, as well as self-training and training for terrorist purposes, all aggravated by the use of online platforms.

Hatred of Jews and Instructions to Build Weapons

The arrest stems from an investigation carried out by Digos units from the Milan and Treviso police headquarters, in cooperation with the Central Directorate for Anti-Terrorism. The teenager came to the attention of investigators during monitoring of “online far-right supremacist environments,” aimed at “early detection of dangerous processes of ideological radicalization and at countering xenophobic and antisemitic acts, also to protect Jewish communities.”

Specifically, the 15-year-old is accused of posting “frequent calls to commit acts of violence with a xenophobic and antisemitic motive,” as well as “statements openly praising terrorist acts and glorifying their perpetrators,” to the point of claiming that he had already partially built a firearm.

During a search of his home, police found materials necessary for the construction of weapons and improvised explosive devices, handwritten notes with drawings of weapons and weapon components, and instructions for manufacturing homemade ammunition.

According to investigators, the adolescent is at an “advanced stage of ideological radicalization.”

Incident Details

Type of Incident: Arrest
Date of Incident: December 17, 2025
City: Treviso
Country: Italy

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About Sentinel

SENTINEL is a European project funded by the European Commission and led by the Security and Crisis Centre (SACC by EJC), the security arm of the European Jewish Congress. It brings together the International Centre for Counter-Terrorism (ICCT), national-level Jewish communities from Austria, Czech Republic, Hungary, Italy, and Spain, the European Union of Jewish Students, with the support of the Italian Carabinieri and the Police Presidium of the Czech Republic.

The project is designed to strengthen the protection of Jewish places of worship across the European Union through a coordinated set of activities over a three-year period.

SENTINEL will harness AI-enhanced open-source intelligence to monitor and assess current, emerging, and future threats. It will also equip Jewish communities with practical tools, including a mobile security application with a panic button and an interactive map built on real-time incident data.

Training and capacity-building are at the core of the project. These include scenario-based security exercises, crisis management seminars, and both in-person and online training sessions for community security trustees. SENTINEL will also organise EU-wide and local conferences to foster collaboration between Jewish communities, public authorities, and law enforcement agencies.

Complementing these efforts, national and local workshops will promote knowledge-sharing and preparedness, alongside pilot training programmes for law enforcement. A dedicated podcast series will help raise awareness by exploring threat assessments and potential responses.

With its wide-reaching and inclusive approach, SENTINEL will directly benefit to Jewish communities across 23 EU Member States, enhancing resilience, strengthening preparedness, and building long-term cooperation with law enforcement to meet today’s evolving security challenges.