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No. 10602936
United States Court of Appeals for the Fourth Circuit
United States v. Nathan Mattocks
No. 10602936 · Decided June 10, 2025
No. 10602936·Fourth Circuit · 2025·
FlawFinder last updated this page Apr. 2, 2026
Case Details
Court
United States Court of Appeals for the Fourth Circuit
Decided
June 10, 2025
Citation
No. 10602936
Disposition
See opinion text.
Full Opinion
USCA4 Appeal: 23-4271 Doc: 73 Filed: 06/10/2025 Pg: 1 of 5
UNPUBLISHED
UNITED STATES COURT OF APPEALS
FOR THE FOURTH CIRCUIT
No. 23-4271
UNITED STATES OF AMERICA,
Plaintiff - Appellee,
v.
NATHAN MATTOCKS,
Defendant - Appellant.
Appeal from the United States District Court for the Eastern District of Virginia, at
Newport News. Rebecca Beach Smith, Senior District Judge. (4:21-cr-00006-RBS-DEM-
1)
Submitted: March 3, 2025 Decided: June 10, 2025
Before WILKINSON, WYNN, and RICHARDSON, Circuit Judges
Affirmed by unpublished per curiam opinion.
ON BRIEF: Andrew M. Stewart, SLOANE STEWART PLLC, Fairfax, Virginia, for
Appellant. Kenneth P. Kaplan, Criminal Division, UNITED STATES DEPARTMENT
OF JUSTICE, Washington, D.C.; Jessica D. Aber, United States Attorney, Richmond,
Virginia, Brian J. Samuels, Assistant United States Attorney, OFFICE OF THE UNITED
STATES ATTORNEY, Newport News, Virginia, for Appellee.
Unpublished opinions are not binding precedent in this circuit.
USCA4 Appeal: 23-4271 Doc: 73 Filed: 06/10/2025 Pg: 2 of 5
PER CURIAM:
Nathan Mattocks argues that his federal prosecution was barred by the Speedy Trial
Act, and thus his convictions must be vacated. See 18 U.S.C. § 3161. We disagree and
affirm his convictions.
In August 2020, Mattocks was arrested by the Commonwealth of Virginia for
violations of state law. On January 28, 2021, the United States filed a criminal complaint
against Mattocks, issued an arrest warrant, and sent a detainer to notify the Commonwealth
of the federal warrant. On February 1, the Commonwealth resolved his pending state
charges. But based on the federal detainer, Mattocks remained in state custody after the
Commonwealth abandoned its charges. On February 3, the U.S. Marshals arrested
Mattocks at the state prison.
The Government moved for pretrial detention at Mattocks’s initial appearance on
February 5. After a hearing on February 10, a magistrate judge ordered that Mattocks be
detained pending trial. On March 5, Mattocks was indicted by a federal grand jury on
several drug and firearm offenses.
Mattocks sought to dismiss the indictment because, his theory goes, the delay
between his federal arrest and indictment exceeded the Speedy Trial Act’s timeliness
requirements. The district court denied this motion, as well as Mattocks’s subsequent
motion for reconsideration, finding that his federal custody began on February 3. At trial,
a jury convicted Mattocks on eleven counts. He now argues his convictions should be
2
USCA4 Appeal: 23-4271 Doc: 73 Filed: 06/10/2025 Pg: 3 of 5
vacated because the district court erred in failing to dismiss his indictment under the
Speedy Trial Act. 1
The Speedy Trial Act provides that, generally, “[a]ny . . . indictment charging an
individual with the commission of an offense shall be filed within thirty days from the date
on which such individual was arrested or served with a summons.” 18 U.S.C. § 3161(b)
(emphasis added). In other words, § 3161(b) requires “that no more than 30 days pass
between arrest and indictment.” Betterman v. Montana, 578 U.S. 437, 445 (2016).
This clock begins when a defendant faces “any restraint resulting from federal
action” “for the purpose of answering a federal charge.” Woolfolk, 399 F.3d at 596
(quoting United States v. Lee, 818 F.2d 302, 304–05 (4th Cir. 1987)). Often this will be
“federal arrest upon a federal charge,” but it need not be. United States v. Thomas, 55 F.3d
144, 148 (4th Cir. 1995) (quoting Lee, 818 F.2d at 305). A federal “detainer” alone,
however, is “not an arrest” or “a summons” and thus does not start the clock. Lee, 818
F.2d at 304. And so here, the earliest possible trigger date is February 1—when state
custody ended, but where Mattocks nevertheless remained in detention.
The Federal Rules of Criminal Procedure provide one more relevant guideline for
calculating speedy trial dates. Fed. R. Crim. P. 45(a). Under the Federal Rules, the time
period does not include “the day of the event that triggers the period.” Fed. R. Crim. P.
45(a)(1)(A). In other words, the first speedy trial day is the one after a defendant enters
1
We have jurisdiction under 28 U.S.C. § 1291. “We review the district court’s
factual findings on a motion to dismiss an indictment for clear error, but we review its legal
conclusions de novo.” United States v. Woolfolk, 399 F.3d 590, 594 (4th Cir. 2005).
3
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the relevant federal restraint; thus, the earliest Mattocks’ clock could start is February 2—
the day after his state charges were resolved.
But some days between the initial restraint and the indictment are excluded from the
calculation. The Speedy Trial Act says any “delay resulting from any pretrial motion . . .
through the conclusion of the hearing on . . . such motion” “shall be excluded in computing
the time.” 18 U.S.C. §§ 3161(h)(1)(D). So, at a minimum, the time calculation does not
include any day that a party files a motion, as well as the day that the court decides it.
United States v. Wright, 990 F.2d 147, 149 (4th Cir. 1993) (citing United States v. Yunis,
723 F.2d 795, 797 (11th Cir. 1984)). So here, at least two days are excluded from the
speedy trial period: Mattocks’s February 5 initial appearance where the United States
moved for pretrial detention, and his February 10 hearing when the court granted that
motion. 2
Armed with these building blocks, we can resolve Mattocks’ claim. Mattocks
plausibly entered federal restraint for Speedy Trial Act purposes on February 1, 2, or 3.
Even applying arguendo the date most favorable to Mattocks, he loses. There are 32 days
between February 2, his start date under Rule 45(a)(1)(A), and March 5, his indictment. 3
A minimum of 2 days are excluded (February 5 and 10). That brings his speedy trial clock
2
To be clear, we express no opinion as to whether the days between the submission
and resolution of the motion should have been excluded as well, cf. Henderson v. United
States, 476 U.S. 321, 330 (1986), whether the government had constructive knowledge of
Mattocks’s detention on February 1, or about any other reason the speedy trial clock may
have been tolled.
3
2021 was not a leap year.
4
USCA4 Appeal: 23-4271 Doc: 73 Filed: 06/10/2025 Pg: 5 of 5
to 30 days. So even with the most generous interpretation of the facts, Mattocks was
indicted “within thirty days” of his detention.
Thus, the district court decision must be
AFFIRMED.
5
Plain English Summary
USCA4 Appeal: 23-4271 Doc: 73 Filed: 06/10/2025 Pg: 1 of 5 UNPUBLISHED UNITED STATES COURT OF APPEALS FOR THE FOURTH CIRCUIT No.
Key Points
01USCA4 Appeal: 23-4271 Doc: 73 Filed: 06/10/2025 Pg: 1 of 5 UNPUBLISHED UNITED STATES COURT OF APPEALS FOR THE FOURTH CIRCUIT No.
02(4:21-cr-00006-RBS-DEM- 1) Submitted: March 3, 2025 Decided: June 10, 2025 Before WILKINSON, WYNN, and RICHARDSON, Circuit Judges Affirmed by unpublished per curiam opinion.
03Stewart, SLOANE STEWART PLLC, Fairfax, Virginia, for Appellant.
04Kaplan, Criminal Division, UNITED STATES DEPARTMENT OF JUSTICE, Washington, D.C.; Jessica D.
Frequently Asked Questions
USCA4 Appeal: 23-4271 Doc: 73 Filed: 06/10/2025 Pg: 1 of 5 UNPUBLISHED UNITED STATES COURT OF APPEALS FOR THE FOURTH CIRCUIT No.
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