A fire at Canadian Forces Base Wainwright in Alberta claimed the lives of four soldiers and left dozens injured, according to provincial officials.

Prime Minister Mark Carney addressed the nation on Sunday, calling the incident "one of the worst tragedies for the forces on Canadian soil in peacetime." The blaze erupted at approximately 16:00 local time on Saturday and was brought under control after several hours. Authorities have not identified a cause, but have ruled out any connection to terrorism.

The deceased have been identified as Sergeant Morgan Wong, Private Shaun Farrell, Private Aidan Goulding, and Private Hayden Lykkemark. Nineteen of the 39 individuals receiving hospital care remain in critical condition, Alberta Premier Danielle Smith reported. Emergency crews continue to monitor the site for residual hot spots.

Military personnel were engaged in live-fire training exercises involving grenade launchers, grenades, and small arms when the fire spread from a nearby grassfire approximately one kilometre from the training area. Unusually strong winds caused the flames to shift direction toward administrative buildings housing the attack range. Maj-Gen Wade Rutland stated that multiple training activities were underway, including simulated enemy engagements.

Mayor Bruce Pugh noted that cannon fire had been heard from the base prior to the incident, a routine occurrence during training. The fire originated near a grassland area and moved rapidly toward the range due to wind conditions. Officials emphasized there was no indication of involvement with oil and gas infrastructure or external interference.

Wainwright, located about 210 kilometres east of Edmonton, serves as a primary live-fire training facility for the Canadian military and hosts both domestic and allied troops. Approximately 690 military personnel and 300 civilian workers are stationed there on a typical day. The Royal Alexandra Hospital in Edmonton received the injured, initially declaring a code orange disaster response before standing it down. Regional air ambulance services deployed aircraft from Edmonton, Saskatoon, and Calgary to assist with patient transfers.

Warren Thirsk, an emergency physician at the facility, described the response as overwhelming to local healthcare resources. Survivors reported scenes of intense activity as medical teams mobilized under emergency protocols. The Canadian Armed Forces have confirmed the investigation remains ongoing, with no evidence pointing to terrorist activity or infrastructure-related causes.

The incident has prompted expressions of national mourning and highlighted the risks associated with military training exercises conducted in proximity to natural environments.