Background
On March 20, 2018, David Carignan was arrested without a warrant at his school — eleven days after allegedly committing sexual assault — and taken to the police station for a recorded interrogation during which he made an incriminating statement. Before trial, he moved to exclude that statement, arguing that the warrantless arrest violated s. 495(2) of the Criminal Code because police had no reasonable grounds to believe the arrest was necessary to satisfy the public interest and no reasonable grounds to fear he would fail to appear in court. Those two conditions, if met, prohibit a warrantless arrest for the category of offences at issue.
The trial judge refused to hold a voir dire on the arrest’s lawfulness. He reasoned that s. 495(3) of the Criminal Code deems a peace officer’s warrantless arrest lawful for purposes of any proceeding under the Code so long as the officer had the grounds required by s. 495(1) — here, reasonable grounds to believe an indictable offence had been committed. On that basis he found Carignan’s motion had no prospect of success, admitted the statement, and convicted Carignan, sentencing him to 15 months’ imprisonment plus two years’ probation.
The Quebec Court of Appeal (2024 QCCA 86) allowed the appeal, holding that the trial judge had misread s. 495(2) and (3). It found that s. 495(3) expressly preserves an arrested person’s ability to challenge a warrantless arrest and that there was no apparent basis to conclude s. 495(2) had permitted the arrest in the first place. The Court of Appeal ordered a new trial, and the Crown appealed to the Supreme Court of Canada.
The Court’s Holding
A unanimous nine-judge Court (Côté J., all others concurring) dismissed the Crown’s appeal. The Court held, first, that s. 495(2) imposes a mandatory prohibition: when its cumulative conditions are satisfied — the offence falls within the listed categories, the public interest can be met without arrest, and there is no risk of non-appearance — a peace officer “shall not” arrest without warrant. That language, construed under s. 11 of the Interpretation Act, creates a binding obligation. An arrest made in contravention of s. 495(2) is therefore an unlawful arrest, which is sufficient to render it arbitrary within the meaning of s. 9 of the Canadian Charter of Rights and Freedoms. The Court overruled a line of provincial appellate decisions — including R. v. Adams (1972), R. v. Cayer (1988), R. v. Jowett Work (2019 BCCA), and R. v. Veen (2022 ABCA) — that had treated s. 495(2) as hortatory or as having no bearing on lawfulness.
Second, the Court held that s. 495(3) does not immunize a non-compliant warrantless arrest in the criminal trial of the person who was arrested. Section 495(3) operates only in proceedings that directly target the criminal or civil liability of the peace officer or persons responsible for that officer: s. 495(3)(a) shields the officer from Criminal Code or other federal statutory liability, while s. 495(3)(b) allows a civil plaintiff to rebut the deemed-lawfulness presumption by proving the officer knew the s. 495(2) criteria were met. Neither scenario applies in the accused’s own criminal trial. Because s. 495(3) was enacted nearly a decade before the Charter, Parliament could not have contemplated that accused persons would later be able to challenge the lawfulness of their arrest as a constitutional remedy, and the provision must be interpreted in that light.
Applying those conclusions to the facts, the Court confirmed that the trial judge’s refusal to hold a voir dire was a reviewable error of law. Carignan’s motion was not manifestly frivolous: s. 495(3) did not foreclose it, and the record disclosed a genuine question whether the public-interest and failure-to-appear conditions of s. 495(2) had been met before the arrest was made. A new trial was warranted.
Key Takeaways
- Section 495(2) of the Criminal Code is mandatory, not precatory: a warrantless arrest made when all of its conditions are satisfied is an unlawful arrest and, without more, an arbitrary detention under s. 9 of the Charter.
- Section 495(3) protects only the peace officer (and those responsible for the officer) against criminal or civil liability; it does not bar the arrested person from raising a s. 9 Charter challenge and seeking a remedy under s. 24 in his or her own criminal trial.
- Trial courts must hold a voir dire on the lawfulness of a warrantless arrest whenever an accused raises a non-frivolous s. 495(2) challenge; summarily denying such a request is an error of law requiring a new trial.
- A series of provincial appellate decisions treating s. 495(2) violations as legally inconsequential have been expressly overruled.
Why It Matters
This decision resolves a longstanding and nationally inconsistent body of case law on one of the most basic police powers in Canadian criminal procedure. By confirming that s. 495(2) creates enforceable limits on warrantless arrests — and that those limits can be tested in the accused’s own trial through a Charter voir dire — the Court strengthens the statutory and constitutional framework against unnecessary pre-trial arrest. Defence counsel across the country now have a clear doctrinal basis to challenge warrantless arrests for hybrid, summary, and s. 553 indictable offences where no legitimate public-interest justification existed at the time of arrest.
For law enforcement agencies and prosecutors, the ruling underscores that the “shall not arrest” language of s. 495(2) carries real legal consequences: an arrest made without properly assessing public-interest necessity and flight risk may result in the exclusion of evidence obtained in its aftermath. The decision also carries broader implications for statutory interpretation, reinforcing that provisions enacted before the Charter must be read in light of the constitutional remedial framework that now exists — even where Parliament could not have anticipated it at the time of drafting.