Walker v. United States

District of Columbia Court of Appeals·Decided August 27, 2026·No. 24-CF-1090·Published

Opinion

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DISTRICT OF COLUMBIA COURT OF APPEALS No. 24-CF-1090

MATTHEW ISIAH WALKER, APPELLANT, V.

UNITED STATES, APPELLEE.

Appeal from the Superior Court of the District of Columbia (2019-CF1-013655)

(Marisa J. Demeo, Judge)

(Submitted April 15, 2026 Decided August 27, 2026)

Sean R. Day was on the brief for appellant.

Jeanine Ferris Pirro, United States Attorney, and Chrisellen R. Kolb, Daniel Seidel, and R. Alan Darby, Assistant United States Attorneys, were on the brief for appellee.

Before BECKWITH and MCLEESE, Associate Judges, and RUIZ, Senior Judge.

Opinion for the court by Associate Judge MCLEESE.

Opinion by Associate Judge BECKWITH, concurring, at page 15.

Opinion by Senior Judge RUIZ, concurring in part and dissenting in part, at page 17.

MCLEESE, Associate Judge: Appellant Matthew Isiah Walker appeals from his convictions of first-degree murder while armed and related weapons and assault offenses. We affirm, except that we vacate one of Mr. Walker’s weapons convictions based on a concession from the United States.

I. Factual and Procedural Background

The evidence at trial included the following. Early in the morning on the date of the murder, surveillance videos captured a man entering Trojan Labor, a temporary employment agency. The man was armed with a handgun and was wearing a black mask, a glove, and a distinctive red, white, and black tracksuit. The man shot two people inside the agency, killing one and wounding the other. The man then fled the building, going westbound on Hamlin Street.

Surveillance footage showed the shooter traveling westbound along Hamlin Street and eventually turning northbound into an alley. At the time of the murder, Mr. Walker lived northwest of Trojan Labor and was known to “hang out” in the surrounding area. Mr. Walker’s name did not appear on Trojan Labor’s employment records, but Mr. Walker had worked at an unidentified temp agency the year before the murder.

Additional surveillance footage recorded beginning at 5:50 a.m. on the date of the shooting—shortly after the shooting—showed a man discarding items in a recycling bin in the front yard of 1550 Hamlin Street, west of Trojan Labor. From this recycling bin, police recovered a face mask, a pair of pants, and a jacket with distinctive markings that matched the outfit worn by the shooter. In the pocket of the jacket, there was a piece of paper with Mr. Walker’s phone number and the name “Max” written on it.

Three days after the murder, in response to an anonymous call, police officers recovered a black glove and a pistol with an extended magazine at 1416 Hamlin Street. At trial, a firearms expert testified that there was “extreme and strong support” for the conclusion that the recovered pistol fired the nine-millimeter cartridge casings that police officers had recovered at the scene of the murder. The expert acknowledged, however, that his conclusion was “not based on a statistically derived or verified measurement”; that there is “no generally accepted statistical way to measure or convey the weight of the evidence” about “firearms and toolmarks forensics”; and that he could not “state that two toolmarks originated from the same source to the exclusion of all other sources.” (We note that no objection was made at trial to the admission of the firearms expert’s testimony, and the issue has not been raised on appeal; we therefore express no view on that issue.)

DNA analysis of the recovered items revealed biological profiles consistent with two individuals. The DNA extracted from the jacket, pants, mask, pistol, and glove was consistent with Mr. Walker’s profile. The DNA on the jacket was 9.8 quadrillion times more likely to be observed if it originated from Mr. Walker and one unknown individual than if it originated from two unknown, unrelated individuals. The DNA on the pants was 890 septillion times more likely to be observed if it originated from Mr. Walker and one unknown individual than if it originated from two unknown, unrelated individuals. The DNA on the mask was 3.9 sextillion times more likely to be observed if it originated from Mr. Walker and one unknown individual than if it originated from two unknown, unrelated individuals. The DNA on the pistol was 1.2 octillion times more likely to be observed if it originated from Mr. Walker and one unknown individual than if it originated from two unknown, unrelated individuals. The DNA on the glove was 56 times more likely to be observed if it originated from Mr. Walker and one unknown individual than if it originated from two unknown, unrelated individuals.

Following a bench trial, the trial court found Mr. Walker guilty of first-degree murder while armed and related offenses. In finding Mr. Walker guilty beyond a reasonable doubt, the trial court relied on the following evidence, considered collectively: Trojan Labor was located in the neighborhood where Mr. Walker worked, lived, and hung out; the shooter was a thin African-American male; the

shooter wore a distinctive tracksuit and mask on which DNA strongly tied to Mr. Walker was found; the piece of paper found in the pants had Mr. Walker’s phone number on it; the pistol recovered from the shooter’s flight path within three days of the shooting appeared to physically match the gun used in the shooting; the shooter fled in the direction of Mr. Walker’s residence; and DNA on the pistol was strongly tied to Mr. Walker. The trial court indicated that its verdict did not depend on the firearms expert’s testimony linking the recovered pistol to the recovered casings.

II. Analysis

A. Sufficiency of Evidence

Mr. Walker argues that there was insufficient evidence to sustain his convictions for first-degree murder. We disagree.

In reviewing the trial court’s verdict in a bench trial, “we . . . are deferential to the prerogatives and advantages of the trial judge in assessing witness credibility, drawing reasonable inferences, and weighing the evidence. We will not disturb the trial judge’s factual findings unless we can conclude they were plainly wrong or without evidence to support them.” Augustin v. United States, 240 A.3d 816, 823-24 (D.C. 2020) (citation modified). “An appellant making a claim of evidentiary insufficiency bears the heavy burden of showing that the prosecution offered no

evidence upon which a reasonable mind could find guilt beyond a reasonable doubt.” Neal v. United States, 340 A.3d 12, 22 (D.C. 2025) (citation modified).

1. Identity

Mr. Walker argues that the evidence was insufficient to establish his identity as the shooter because the surveillance footage was of limited identifying value, the DNA evidence consisted of mixed-source profiles, and the evidence was equally consistent with his having been set up by another person. We hold that the evidence was sufficient to permit the trial court to find beyond a reasonable doubt that Mr. Walker was the shooter.

The “identity of the defendant as the person who committed the charged crime is an essential element that the government must always prove beyond a reasonable doubt.” Brooks v. United States, 717 A.2d 323, 327 (D.C. 1998). Identity need not be established through direct evidence, however. Rather, “identification may be inferred from all the facts and circumstances that are in evidence,” “so long as the evidence is sufficient to permit the inference that the person on trial was the person who committed the crime.” Id. (citation modified). We do not distinguish between direct and circumstantial evidence in reviewing the sufficiency of the evidence. Bernard v. United States, 575 A.2d 1191, 1193 (D.C. 1990).

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