I think that the real truth about it being a murder-suicide is being withheld by authorities because you can't have world and business leaders turning up at the funeral and honour a murderer.
These facts of murder-suicide will be released a few days after the funeral.
In this Rich Folk area of Toronto, there are a zillion cameras. Everyone on the street or in the area was filmed. Also, the home itself would have an elaborate camera system as well.
Nothing moved within proximity of this house without being filmed.