listen.
if you want to kill yourself, it's easy enough to find a bridge or some poison or something else.
you don't need to trigger the cops, who probably want to catch you alive if they can, anyways.
canada has experienced a few unfortunate outbursts of mental illness. but, this doesn't appear to be a terrorist attack - nor have any of the incidents here been accurately described that way.
it seems like this person was suicidal and wanted to go out in a bang.