Background
Police obtained warrants to search Daniel Mackenzie’s Ford F-150 and a detached garage after his girlfriend, Colleen Hunter, reported that she had seen him with firearms. The resulting garage search uncovered a handgun, a conducted energy weapon, and two pairs of brass knuckles. The information used to obtain the warrants omitted that police had recently searched the truck without finding evidence, that Hunter’s new account conflicted with her earlier denials of knowledge about Mackenzie’s firearms and vehicle, and that she faced an outstanding charge of assaulting him.
On Mackenzie’s Garofoli application, the trial judge added the omitted information to the warrant record and found that the warrants still could have issued. Nevertheless, he exercised a residual discretion to invalidate them, finding that the omissions resulted from the affiant’s negligence and inexperience and had subverted the authorization process. He found a breach of s. 8 of the Canadian Charter of Rights and Freedoms, excluded the critical evidence under s. 24(2), and entered acquittals. The Crown appealed.
The Court’s Holding
The Court of Appeal unanimously allowed the Crown’s appeal. It held that the residual discretion to invalidate an otherwise supportable warrant during a Garofoli review requires intentional wrongdoing by the affiant—such as deliberate non-disclosure, deception, fraudulent misrepresentation, or comparable bad faith—that is sufficiently grave to subvert the warrant process. Negligence, even serious negligence, does not meet that threshold.
The trial judge had expressly found that the affiant did not deliberately mislead the issuing justice and that the omissions arose from negligence and extreme inexperience. Because he also found that the warrants still could have issued after the record was amplified with the omitted information, Mackenzie’s warrant challenge should have been dismissed. The legal error materially affected the acquittals because it led to exclusion of the Crown’s critical evidence. The court therefore set aside the acquittals and ordered a new trial.
Key Takeaways
- A Garofoli reviewing judge asks whether the issuing justice could have granted the authorization on the record as properly excised or amplified, not whether the reviewing judge would have granted it.
- The residual discretion to invalidate an otherwise supportable warrant is confined to rare cases involving intentional wrongdoing that gravely subverts the prior-authorization process.
- Negligent omissions from warrant materials may be relevant to amplification and to a s. 24(2) analysis, but negligence alone cannot establish the bad faith required to invoke the residual discretion.
Why It Matters
The decision draws a firm boundary around an exceptional remedy in Canadian search-warrant litigation. Even material and serious police omissions do not justify quashing a warrant under the residual discretion when the corrected record still supports issuance and the affiant did not intentionally mislead the issuing justice.
For criminal practitioners, the ruling also distinguishes the binary inquiry into intentional bad faith under the residual discretion from the more nuanced assessment of police conduct under s. 24(2). It confirms that the broader abuse-of-process doctrine does not expand the Garofoli residual discretion to encompass negligent conduct.