Several dead or injured in major fire at Canada military base

Several people have been killed or injured as a result of a large fire near a Canadian military base in Alberta, the nation's military has said.

The Canadian Armed Forces (CAF) said the full extent of the incident was being assessed and that details of casualties and injuries would not be made public until that was complete.

Canadian TV network Global News reported that at least seven were killed and dozens more injured when a gas line or gas well was hit during a live-fire training exercise, citing unnamed military sources.

Canadian Forces Base Wainwright, where the fire broke out at about 16:00 local time (22:00 GMT) on Saturday, is one of the country's busiest military training bases.

On Sunday morning, a defence department spokeswoman told the BBC that "the situation continues to evolve" and "the full extent of the impact remains under assessment".

She also said investigations are in progress but "at this time, there are no indications that it was the result of any terrorist activity".

Defence Minister David McGuinty earlier said the CAF and local authorities were managing the fire, describing the situation as "very, very active and delicate".

Canada's Prime Minister Mark Carney said his "thoughts are with all the brave women and men affected".

The Canadian Broadcasting Corporation (CBC) said Royal Alexandra Hospital in Edmonton had declared a code orange, a disaster response protocol for responding to a high-casualty incident.

Warren Thirsk, an emergency department doctor there, told the broadcaster that the number of patients would otherwise "overwhelm" Edmonton's healthcare facilities.

"It is more patients than any of us want to count right now. It's a disaster. It's a one in every 15 to 25-year disaster."

After the fire erupted on Saturday, it "spread rapidly due to high winds" and tore through the fences of the base, the Municipal District of Wainwright said.

The region experienced gusts of up to 100km/h (62mph), though local officials indicated fire crews had contained the blaze.

McGuinty told reporters he "cannot recall an incident like this in recent memory".

Local authorities have urged residents to avoid the area and give all emergency vehicles right of way.

The mayor of the nearby town of Wainwright, Bruce Pugh, said it was a "heavy day" for his community.

"We have neighbours who are either serving or former members of the Canadian Armed Forces. We're integrated, our kids play in the same hockey teams, attend the same schools," he told CBC.

While details on the impact of the fire remain unclear, Pugh said he believed this would come to be the area's largest-ever mass casualty event.

Gen Jennie Carignan, chief of Canada's defence staff, said it was a "profoundly difficult moment" for the CAF.

Neighbouring provinces have mobilised in support. Saskatchewan Premier Scott Moe said he had deployed resources to Alberta and was "ready to provide more if required", while British Columbia Premier David Eby said his government had offered "all possible assistance".

Wainwright is the main base used by the Canadian military for live-fire training exercises, according to CBC, with about 690 military personnel and 300 civilian workers on-site on a typical day.