Explosion at KNDS Ammo Italy Plant in Colleferro

The full story

On August 13, 2026, a fire broke out at the KNDS Ammo Italy facility in Colleferro, approximately 50 kilometers southeast of Rome, followed by a massive explosion. The plant, formerly known as Simmel Difesa, is a key manufacturer of ammunition and aerospace propellants. The blast, which generated a large fireball and mushroom cloud, prompted an immediate response from local firefighters and the Carabinieri. Because the plant was in a period of scheduled closure or low activity, officials reported that no personnel were in the affected area at the time, resulting in no injuries or casualties. While the explosion occurred amidst broader European concerns regarding the security of defense supply chains, Italian Defense Minister Guido Crosetto has explicitly dismissed speculation of Russian involvement or sabotage. The Velletri Prosecutor's Office is currently leading an investigation into the incident, with officials stating that evidence currently points toward an internal accident rather than external interference. While some political figures have called for further transparency regarding infrastructure security, no official findings have contradicted the assessment that the event was an industrial accident.