State v. Williamson

Summary

The New Mexico Supreme Court held that an issuing court’s probable-cause determination for a search warrant must be reviewed deferentially rather than de novo. The Court concluded that the warrant affidavit provided a substantial basis for probable cause despite a drug-detection dog’s failure to alert, because the affidavit explained how the packaging could reduce detectability. The Court reversed the Court of Appeals and remanded for further proceedings.

Holdings

1. An issuing court's determination of probable cause must be upheld if the search-warrant affidavit provides a substantial basis for finding probable cause; appellate courts may not review that determination de novo or substitute their judgment for the issuing court's.
2. The dog's failure to alert did not negate probable cause because the affidavit adequately explained that the packaging could make narcotics less detectable and the remaining circumstances, viewed together, provided a substantial basis to infer that the package contained illegal narcotics.

Questions Presented

1. What standard of review applies to an issuing court's determination that a search-warrant affidavit establishes probable cause?
2. Whether the search-warrant affidavit provided a substantial basis for probable cause despite the narcotics-detection dog's failure to alert.
3. Whether the marijuana and drug-paraphernalia evidence was properly suppressed.

Disposition

reversed_and_remanded