Background
The Wyoming Supreme Court affirmed Marvin Emmett Brown Jr.’s drug convictions and clarified two practical limits on criminal appeals: a suppression theory not timely presented to the district court is waived absent good cause, and coded communications concerning prior drug transactions may be admitted under Wyoming Rule of Evidence 404(b) when they help prove intent and place the charged conduct in context. Justice John G. Jarosh wrote for a unanimous court.
Wyoming drug investigators were conducting surveillance in Rawlins when an agent saw Brown leave his home and later drive through a stop sign. A sheriff’s deputy stopped Brown’s truck, and another deputy conducted a free-air sniff with his police dog, Nako. After Nako alerted, officers searched the truck and found approximately 309 grams of methamphetamine, marijuana, packaging materials, and other evidence associated with distribution. Officers also found methamphetamine and a handgun in the back seat of the patrol vehicle where Brown had been sitting. A later search of Brown’s home uncovered more packaging materials, a scale, suspected drug residue, firearms, and ammunition.
Brown’s original suppression motion challenged the justification for the traffic stop but did not contest the reliability of the dog sniff. After Brown changed lawyers, his new counsel discussed filing another suppression motion based on body-camera footage and information about Nako’s training history. The district court denied a requested trial continuance but said it would consider a late motion if counsel filed one. No second or supplemental suppression motion followed. At trial, the State also introduced text and Facebook messages in which Brown and five other people used terms such as “groceries,” “parts,” and quantities that the State characterized as coded references to drug transactions. The jury convicted Brown of several drug, firearm, interference, and traffic offenses, and the district court imposed a 30-to-40-year prison sentence on the merged methamphetamine convictions.
The Court’s Holding
The Supreme Court first held that Brown waived any challenge to the validity of Nako’s alert. Wyoming Rule of Criminal Procedure 12 requires suppression issues to be raised before trial, and Rule 12(g) generally treats an omitted claim as waived unless the defendant shows good cause. The same rule applies when a defendant files one suppression motion but advances a different suppression theory for the first time on appeal. Brown’s initial motion addressed whether officers had reasonable suspicion for the stop; it never challenged the free-air sniff, and his later statements that he wanted to pursue that issue did not preserve it.
The record also defeated Brown’s good-cause argument. The State had provided discovery to both defense lawyers, information about the dog appeared in the charging materials, and Brown personally observed the sniff. Most importantly, the district court did not prohibit a second motion—it expressly said it would examine one if filed. Because Brown identified no actual impediment that prevented a timely filing, the court declined appellate review of the new suppression theory.
The court also upheld admission of Brown’s messages under Rule 404(b). The district court had separately considered relevance, probative value, and unfair prejudice, even though it did not make an express finding on every factor. The messages served permissible purposes: they supplied context for the charged conduct and tended to show knowledge, intent to distribute, and an ongoing course of drug dealing rather than possession only for personal use. Their dates, some extending back to 2023, did not automatically make them too remote. Wyoming law imposes no fixed time limit on other-acts evidence, and remoteness is one factor in the overall analysis. Given Brown’s defense that the drugs were not his, the similarity between the coded messages and the charged distribution conduct increased their probative value.
Key Takeaways
- A defendant must put each distinct suppression theory before the district court. Challenging the basis for a traffic stop does not preserve a separate challenge to a police dog’s alert.
- A change of counsel does not itself establish good cause for an untimely motion when discovery was available and the court remained willing to consider a later filing.
- Wyoming courts may admit coded messages about uncharged transactions when they illuminate intent, knowledge, context, or an ongoing scheme, provided the trial court performs the required Rule 404(b) and Rule 403 analysis.
Why It Matters
For Wyoming criminal practitioners, the decision underscores that preservation must be theory-specific. Defense counsel inheriting a case should audit not only whether a suppression motion was filed, but also whether it reaches every search, seizure, dog sniff, warrant, and evidentiary link that may matter on appeal. An expressed intention to supplement a motion is not a substitute for filing it, especially after the court leaves the door open.
The opinion also gives prosecutors and defense lawyers a useful roadmap for litigating coded digital communications. Trial courts need not mechanically recite every factor, but the record must show a genuine analysis of proper purpose, relevance, probative value, and unfair prejudice. The closer the messages connect to a disputed element such as intent to distribute, the stronger the basis for admission despite the risk that a jury may view them as propensity evidence.