Tenth Circuit Reverses Conviction Based on Improper Admission of Anonymous Tip at Trial
On Undisclosed, we’ve covered a number of cases involving anonymous tips, and I’ve always lamented the lack of precedent on the issue of how to handle such tips at trial. Well, now we have a case that bucks that trend and addresses the issue head-on: United States v. Simpson, 2026 WL 1549308 (8th Cir. 2026).
In Simpson, “[o]n May 10, 2020, Kansas City police received an anonymous tip that Terrell Simpson, who had been convicted of a felony, was in possession of a gun.” The police followed up on the tip, eventually leading to them (arguably) finding Simpson in possession of a firearm, leading to criminal charges.
Thereafter,
Before trial, Simpson filed a motion in limine to exclude any testimony about the tip, asserting it was inadmissible hearsay and violated his Sixth Amendment Confrontation Clause rights. The government opposed the motion, arguing the tip would not be offered for its truth but to provide context for the tone and manner of the traffic stop. Simpson responded that neither the propriety of the stop nor the officers’ conduct in carrying it out was at issue. Simpson also proffered alternative ways to provide the jury with any necessary context or to eliminate the need to do so.
The district court denied the motion, finding the tip could be offered as “context and to give the jury a better understanding of why the stop was conducted in the manner in which it was.” Accordingly, the government could say that the officers received a tip, believed Simpson might be armed, and knew Simpson had an outstanding warrant for his arrest. Simpson again proposed evidentiary alternatives, which he asserted met the government’s need to explain the officers’ conduct without having to introduce the tip. The court declined to reconsider its ruling. The next day, Simpson moved for a mistrial, arguing that admission of the tip into evidence was unduly prejudicial. The district court denied the motion.
The Tenth Circuit ultimately reversed Simpson’s conviction, ruling, inter alia, that
It is true that “out-of-court statements are not hearsay if they are offered ‘to explain the reasons for or propriety of a police investigation.’”…But “[t]his type of evidence will be allowed into evidence to explain a police investigation…only when the propriety of the investigation is at issue in the trial.”…Here, the record does not support a finding that “the propriety of the investigation” was at issue in Simpson’s trial. Simpson’s defense was that Turner, not he, possessed the gun found in the purse. Simpson did not challenge the propriety of the stop, the reasonableness of the officers’ conduct in connection with the stop, or even the fact of his prior conviction. His only challenge to police conduct concerned the risks of contamination in the officers’ collection of DNA—conduct that was unrelated to the reason for the stop or how the officers carried it out. On this record, the tip was not relevant to its stated purpose.
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