Controlled Detonation of WWII Bomb in Colombes, France

On April 10, 2026, a World War II bomb was discovered during construction work on Rue des Champarons in Colombes, a suburb of Paris. The device, measuring over one meter in length, was deemed too dangerous to manually defuse, leading authorities to initiate a large-scale evacuation of residents within a 450-meter radius. By April 19, nearly 15,000 residents were instructed to leave their homes as bomb disposal experts prepared for a controlled detonation of the explosive.

Experts Carry Out Controlled Blast of WWII Bomb near Paris

Initial attempts to remove the bomb's detonator were unsuccessful, prompting a shift in strategy. Authorities decided to bury the bomb in a specially dug two-meter-deep pit for a controlled explosion. This operation required extensive planning and involved nearly 800 police officers to secure the area and enforce a one-kilometer evacuation perimeter. Local officials, including Alexandre Brugère, described the operation as "risky" and requiring a "high level of preparation."

Experts Carry Out Controlled Blast of WWII Bomb near Paris

At approximately 3:20 PM on April 19, the bomb was detonated successfully, with the explosion heard by nearby residents. Following the controlled blast, the evacuation order was lifted around 4 PM, allowing residents to return to their homes. The Hauts-de-Seine prefecture confirmed that the operation had been completed successfully and that the area was once again accessible.

WW2 bomb detonated in Paris suburb as thousands evacuated

The discovery of unexploded World War II ordnance remains a significant issue across Europe, particularly in urban areas where construction activities frequently unearth such devices. In recent years, similar incidents have led to evacuations in various locations, including a notable case in 2025 when a 500-kilogram bomb was found near Paris's Gare du Nord.

The Local (France)

The Hauts-de-Seine prefecture communicated the successful completion of the mine clearance operation and the subsequent lifting of the evacuation order. Local officials expressed gratitude for the cooperation of residents during the emergency response, emphasizing the importance of safety in such operations.

WW2 bomb detonated in Paris suburb as thousands evacuated

While the operation was largely viewed as successful, some residents expressed concern over the abrupt nature of the evacuation and the potential risks involved in the detonation process. One local resident, Alida, noted, "The authorities told us to close our windows and shutters when we left the house, but we didn’t take anything – we left everything as it was."

WW2 bomb detonated in Paris suburb as thousands evacuated

• “Ahead of the operation, local official Alexandre Brugère said it would be “risky” and required a “high level of preparation”.” — Alexandre Brugère, Local Official

WW2 bomb detonated in Paris suburb as thousands evacuated

• “The authorities told us to close our windows and shutters when we left the house, but we didn’t take anything – we left everything as it was,” — Alida, Local Resident

WW2 bomb detonated in Paris suburb as thousands evacuated

The controlled detonation of the WWII bomb in Colombes highlights ongoing challenges related to unexploded ordnance in Europe. The successful evacuation and subsequent operation underscore the importance of preparedness and community cooperation in ensuring public safety during such incidents.

The Local (France)