Canada suffers one of the worst peacetime tragedies for its military on domestic soil as four service members die in a fire at a base in Alberta

Canadian Prime Minister Mark Carney said Sunday that four service members were killed and dozens more seriously injured in a fire at a military base in Alberta, describing it as one of the worst peacetime tragedies for Canada’s military on domestic soil.

Fire crews scrambled late Saturday as fierce winds whipped flames beyond Canadian Forces Base Wainwright and into the surrounding rural area.

The Canadian military said Sunday there were no indications that the incident was the result of terrorism, but the cause remained under investigation.

Speaking in a televised address, Carney said the families of those killed had been notified and that the situation was still evolving.

Carney said the service members killed and injured were participating in military training when the fire broke out Saturday.

Flags would fly at half-staff on federal buildings across the country in honor of those affected by the tragedy, he said.

Carney said those affected included reservists and soldiers from Princess Patricia’s Canadian Light Infantry, one of Canada’s most storied military regiments.

The personnel had come from bases across the country to train at Wainwright.

It was not immediately clear exactly how many people had been injured.

Carney said the wounded were being treated in Wainwright, Edmonton, Red Deer and Calgary.

Cathy Keane, a mayoral candidate in Ontario, said her eldest son was among the military personnel critically injured.

“As a mother, right now I need to be with my son and family,” she wrote on Facebook, saying she was traveling to Alberta.

A doctor at a hospital in the city of Edmonton, 180 kilometers (112 miles) northwest, told Canada’s national broadcaster that patients were taken to hospitals across the city as healthcare facilities around the base became “completely overwhelmed” by the number of people needing care.

“This number of patients would overwhelm the city of Edmonton,” Dr.