The only email that I have received after AOR was from CIC-Vancouver requesting fingerprints. That email included the statement.Either by ordering GCMS notes or checking the email address when you get an email from the IRCC office where your application has been sent (not the AOR email).
“Your application for Canadian Citizenship remains at your local office for processing.”
But no where does it state what the local office. I live in Ontario halfway between Toronto and Ottawa. Actually closest to Scarborough. Is it possible that it is processing in the Vancouver office?