Four service members were killed and dozens of others seriously injured in a fire at a military base in Canada's Alberta province, Prime Minister Mark Carney said on Sunday (18 October), describing the incident as one of the country's worst peacetime military tragedies on home soil.
Firefighters rushed to the scene late Saturday as strong winds drove flames beyond Canadian Forces Base Wainwright into nearby rural areas. The Canadian military said there was no indication that the fire was linked to terrorism, though its cause remained under investigation.
In a televised address, Carney said the families of the four deceased service members had been notified and the situation was still developing. The personnel were taking part in military training when the fire broke out on Saturday.
Carney said flags on federal buildings across the country would be flown at half-mast in honour of those affected.
The casualties included reservists and soldiers from Princess Patricia's Canadian Light Infantry, one of Canada's most renowned military regiments. They had travelled from bases across the country to participate in training at Wainwright.
The exact number of injured personnel was not immediately known. Carney said the wounded were receiving treatment in Wainwright, Edmonton, Red Deer and Calgary.
Cathy Keane, a mayoral candidate in Ontario, said her eldest son was among those critically injured and that she was travelling to Alberta to be with him and her family.
Dr Warren Thirsk, an emergency department physician at Edmonton's Royal Alexandra Hospital, told CBC News that hospitals around the base had been overwhelmed by the number of patients requiring treatment.
Acute Care Alberta said several hospitals across the province had activated a "Code Orange", an emergency designation for incidents involving multiple seriously injured patients requiring coordinated care. Emergency medical resources were stretched so thin that very few ambulances remained available in the Edmonton area.
The agency urged people to avoid the University of Alberta Hospital emergency department if possible.
Wainwright Mayor Bruce Pugh said the town's small hospital was not equipped to handle a mass-casualty incident but praised local medical workers for their response. Helicopters and aircraft were transporting patients to other facilities for treatment.
Defence Minister David McGuinty said the Royal Canadian Mounted Police were involved in the investigation and described the situation as "very, very active and delicate". He was travelling to Edmonton on Sunday to receive a briefing on the latest developments.
The RCMP said officers were called shortly after 4pm on Saturday following reports of a fire in a training area at the base.
Firefighters faced challenging conditions as a windstorm battered large parts of Alberta, with gusts reaching 100 kilometres per hour. The strong winds toppled trees, sent signs flying and pushed rubbish bins along streets.
By 11pm, the Municipal District of Wainwright said the fire was being contained and that property and critical infrastructure were protected. No evacuation order had been issued for local residents.
Alberta Premier Danielle Smith described the fire as "significant and tragic", while Saskatchewan Premier Scott Moe said his province was sending assistance to Alberta.
Carney praised emergency crews who battled the blaze overnight, adding that STARS air ambulance helicopters had flown in from Edmonton and Saskatoon.
Canadian Conservative opposition leader Pierre Poilievre said he had spoken with Carney and the defence minister to offer support to those affected. He also urged residents to follow emergency instructions and keep roads clear for first responders.
The fire also disrupted advance voting ahead of Monday's referendum on whether Alberta should begin a process that could eventually lead to independence from Canada. Elections Alberta said the advance polling station at Wainwright Communiplex closed early on Saturday, with ballots and election materials transported securely. Polling stations in Lloydminster and Vermilion were identified as alternatives.
CFB Wainwright is one of Canada's busiest military training facilities, hosting realistic battlefield exercises and training programmes for soldiers preparing for combat operations.