A fire at CFB Wainwright in Alberta has resulted in multiple fatalities and injuries. Authorities have deemed the incident as grave. The cause of the fire is under investigation. The incident occurred at a military base. Reports indicate multiple fatalities and injuries. The Canadian Defence Minister has confirmed the deaths. The fire broke out at the Alberta military base causing deaths and injuries. Canadian officials have said the incident was serious. Multiple casualties have been reported after a fire broke out at CFB Wainwright.