Sabotage Explosive Devices Bombing Threats Online Threats Homemade Explosives Attempted Attacks Islamist Extremism Motives Political Terrorism Political Violence International Terrorism Explosives Extremism State-Sponsored Terrorism Cyber Terrorism Explosions International Crime Incendiary Devices Bombing Attempts Domestic Terrorism Suspects Bomb-Making Militant Actions
Prosecutors point to purchase records, cell data plus a license‑plate hit as the leads that revived a case now facing questions over years of delay.