To cancel the passport of the deceased it should be returned to Passport Canada with a copy of the death certificate and a letter indicating if the cancelled passport should be destroyed or returned to you.
We recommend that you send the documents by registered mail to:
Foreign Affairs Canada
Gatineau QC K1A 0G3
Or you can send the document by courier to:
70 Crémazie Street
Gatineau QC J8Y 3P2
Posted in: Government Documents