During the course of an investigation under the Traffic Safety Act, a police officer attempted to effect a warrantless arrest of the applicant for obstruction under s. 129(a) of the Criminal Code. In a pre-trial application, the trial judge found that the police officer was not executing a lawful arrest, and therefore breached the applicant’s s. 9 Charter right not to be arbitrarily detained by attempting the arrest. The trial judge acquitted the applicant of assault causing bodily harm. The Court of Appeal allowed the appeal, and ordered a new trial. Argued Date 2025-10-17 Keywords Criminal law — Arrest — Can a police officer arrest an individual for obstruction under the Criminal Code, during the course of a regulatory (or municipal) investigation where the regulatory (or municipal) statute provides for a lesser enforcement remedy — Does the discretion referenced in Goodwin v. British Columbia (Superintendent of Motor Vehicles), 2015 SCC 46 allow police officers to engage the more serious Criminal Code provisions during the course of an investigation for less serious regulatory or municipal offences? Notes (Alberta) (Criminal) (By Leave) Language English Audio Disclaimers This podcast is created as a public service to promote public access and awareness of the workings of Canada's highest court. It is not affiliated with or endorsed by the Court. The original version of this hearing may be found on the Supreme Court of Canada's website. The above case summary was prepared by the Office of the Registrar of the Supreme Court of Canada (Law Branch).