Italian police have arrested a 17-year-old girl on suspicion of involvement with jihadi groups and planning a potential attack. Authorities say the teenager was active in online circles that support the Islamic State (ISIS) and expressed a willingness to become a martyr for her beliefs. During an investigation, police found that the girl had downloaded instructions on how to build an explosive belt, a common tool used in suicide bombings. The arrest took place as part of ongoing efforts to prevent terrorist activity. Officials have not released the suspect's name due to her age. The girl now faces charges related to terrorism and the possession of materials linked to violent extremism. Her online activity reportedly included participating in pro-ISIS forums and sharing extremist content. This case highlights how authorities are monitoring social media to detect radicalization among young people. The investigation continues, and police are looking into whether she had any direct contacts with ISIS members abroad. The arrest has raised concerns about the influence of extremist propaganda on teenagers.