Why would they have to answer to the U.S. or Australian government? Will they have to provide a briefing of some kind or something more?
What is the general policy when a citizen of one nation is killed in another? I'm sure there's diplomatic type communications at least but is there anything beyond that? There were four Canadians killed in the Las Vegas shooting in 2017 and I can't recall whether or not American police had to provide anything official to the Canadian government regarding the investigation.
They don't. No one in Canada has to care at all about how they are perceived outside of Canada.
The amount of information available to the US public about the Las Vegas shootings far exceedings what is available publicly to Canadians about these events. So, no Canadian should complain about lack of information on the US side and if Canadians like their system, they should maintain it. From reading here, I know that some Canadians would have liked more information (I, for one, want to know if snipers are in the woods...what guns they are using, but that's just me).
We each choose where to live and where to travel based on perceptions. I'm just saying that Australians, in particular (where this case gets heavy coverage) may be left with a bad taste.
I'm not that interested in "official" communications. I'm interested in police having to back up their pursuit of suspects with evidence that makes sense to the public. I guess I'm agreeing that murders on public roads are public events. We know, for example, what weapons were used in El Paso and Dayton, how big the magazines were, and that grandparents (in the El Paso case) had contacted police with serious concerns about the shooter. In the Dayton case, we know that nearly all the deceased were shot in the torsos (typical of someone fanning a group with an aim to make sure lots of shots land) except for the sister (who was shot in the head). In the case of the Orange County man who went on a rampage (yesterday, I believe) and knifed a bunch of people, we know that he also robbed a couple of places without knifing them (but at knife point - actually, it was a machete).
And you betcha, I want to know if people in my general area are wielding machetes (a guy was walking with one at 5 am when noticed by some neighbors - I would now cite this other case in asking them to please let police know).
Motive/MO are not the rigid things we once thought. These two were capable of quite a bit (but not as much, if they were merely armed with a plastic pellet gun and one knife). If they ran over Prof Dyck and didn't shoot or slice him, that means something different (to me and yes, I do want to know). I'd want to know if all three people were essentially knifed to death, as I would take different precautions than if they were running people over with vehicles.
I do wonder if RCMP could work effectively with the Australian LE, in this case (given the very different constraints on publicity). That alone (isolating RCMP from very good LE in Australia) makes me a little disappointed (I think that the more eyes are on a case, the better).