Ottawa, Oct. 18 -- Several people were killed and injured in a major fire at a Canadian military training base in Alberta, Defence Minister David McGuinty said, as emergency services struggled to cope with the influx of casualties.

McGuinty did not disclose the number of dead and injured or the cause of the blaze at Canadian Forces Base Wainwright. He described the situation as "very active and delicate" and said an investigation would be launched.

The Canadian Armed Forces said casualty figures would be released after the next of kin had been notified.

The fire broke out at around 4 pm local time on Saturday at a training area at the base in east-central Alberta and spread rapidly amid strong winds, officials said. The blaze also spread...