When an officer seizes something under the immigration law, they must give written notice to the person it was taken from, including the reasons for the seizure. If that person isn't the actual owner, the officer must make reasonable efforts to find the owner and notify them as well.
(1)253 (1) An officer who seizes a thing under subsection 140(1) of the Act shall provide written notice to the person from whom it was seized, including the grounds for the seizure.
(2)(2) If the person from whom the thing was seized is not the lawful owner, the officer shall make reasonable efforts to identify the lawful owner and to give the lawful owner written notice of, and the grounds for, the seizure. If the notice is provided by mail, notification is deemed to have been provided on the seventh day after the day on which the notice was mailed.