Extremism Terrorist Recruitment Jihadism Online Extremism Islamism Youth Recruitment Youth Involvement Public Safety Community Impact Youth Behavior Terrorism Social Media Influence Extremist Ideologies Islamic Extremism Mental Health Terrorist Activities Social Media Ideology Lone Wolf Attacks Terrorism Impact Anti-Government Sentiment Terrorist Training Political Extremism Ideological Extremism Suicide Bombers Youth Influence Homegrown Extremism Political Violence Recruitment Youth Terrorist Organizations Youth Radicalization Community Safety Terrorist Ideology Military Influence Online Behavior Jihadist Groups Jihadist Movements Khalid Sheikh Mohammed Youth Crime Criminal Cases Extremist Groups Impact on Education Digital Propaganda Cultural Issues Asylum Seekers Islamic State Youth Involvement in Crime Islamist Extremism Criminal Behavior Demographic Change Immigration Issues Incel Movement Cyberharassment Hate Crimes Cultural Background Public Threats Militant Groups Community and Extremism Terrorist Profiles Youth Involvement in Terrorism Peer Influence Cultural Impact Youth Extremism Militant Organizations Online Propaganda Youth Indoctrination Gaming Culture Militant Indoctrination Prevention Indoctrination Counter-Terrorism Martyrdom Youth Violence Online Forums
Prosecutors point to social-media messages, Western Union records, a seized IED.
