California Code, Business and Professions Code - BPC § 14435

(a) Whenever any registrant or any member of the registrant takes an oath before any magistrate that he has reason to believe, and does believe, that any of the containers, supplies or equipment mentioned in this article, are being unlawfully sold, filled or used, or are secreted in any place, the magistrate shall issue a search warrant to discover and obtain them;

(b) The magistrate may cause to be brought before him, the person in whose possession the containers, equipment or supplies are found, and if he finds that the person has been guilty of a violation of this article, he shall impose the punishment prescribed in this article, and also award the possession of the containers, equipment or supplies taken upon the search warrant to the owner, or to the corporation or association of which the owner is a member.