Remedy for Lost or Destroyed Jencks Act Material

The Statutory Sanction: Strike the Testimony or Declare a Mistrial

The Jencks Act does not leave nonproduction to a judge’s general discretion — it prescribes a specific consequence. Under 18 U.S.C. § 3500(d), if the government elects not to comply with an order to deliver a witness’s statement, the court “shall strike from the record the testimony of the witness,” and the trial proceeds unless the court decides the interests of justice require a mistrial.

Federal Rule of Criminal Procedure 26.2(e) carries the same remedy. If the party who called the witness disobeys a production order, the court must strike that witness’s testimony; if it is a government attorney who disobeys, the court must declare a mistrial if justice so requires. The remedy is aimed at the testimony the missing statement would have been used to test, not at the case as a whole.

Two features stand out. First, the sanction is mandatory in form — the statute says the court “shall” strike — though courts retain discretion to withhold a sanction where the violation is harmless. Second, striking testimony is the default and a mistrial the escalation, reserved for when excising the testimony cannot cure the prejudice. Whether a lost or destroyed document triggers this machinery at all depends first on whether it was a producible statement, and then on the government’s conduct and the resulting prejudice.

Good-Faith Destruction of Notes Already in a Report

Not every lost document is a Jencks problem. The most common scenario — an agent discarding rough notes after transferring their content into a formal report — frequently produces no violation at all, provided the destruction was in good faith and the report was disclosed.

The Supreme Court set the baseline in Killian v. United States. It held that if agents’ notes were made only to transfer data into a formal record and, after serving that purpose, were destroyed in good faith and in accord with normal practice, their destruction “did not constitute an impermissible destruction of evidence nor deprive petitioner of any right.” A defendant is not entitled to a new trial over notes that were routinely and honestly discarded before trial.

The Fifth Circuit applied that principle in United States v. Brown, where an agent destroyed rough interview notes after their contents were captured in a 302 that was disclosed to the defense. The court held that nothing in the Jencks Act requires preserving notes after they have served their purpose of assisting in preparing the report, and that the defendant was not entitled to relief when the report accurately reflected the notes. Any error was harmless because the disclosed report contained the same information.

The common thread is that the discarded material was not itself a producible statement and its substance survived in a document the defense received. When those conditions hold — good-faith routine destruction, and full incorporation into a disclosed report — the loss of the underlying notes does not trigger the § 3500(d) sanction. The analysis shifts, however, the moment the destroyed item was itself a producible statement.

Destroying a Producible Statement, Even in Good Faith

When the destroyed item was itself a producible statement, good faith does not save the government. Courts treat destruction of a Jencks statement as equivalent to refusing to produce it, and the sanction machinery applies regardless of the agent’s benign intent.

In United States v. Carrasco, the Ninth Circuit held that a witness’s diary became a Jencks statement once she gave it to a DEA agent, and that the agent’s destruction of it — even if routine — was “no less a violation of the Jencks Act because it was pursued in good faith.” The court recognized a narrow escape: destruction may be excused if it happened before the prosecution was contemplated, in accord with normal practice, for a reason wholly unrelated to the case, and with no intent to suppress. Absent that, good faith neither adds an inference of bad motive nor earns the government a pass.

The court in United States v. Riley reinforced the point, quoting Carrasco that destroying a witness’s statement is a violation even when done in good faith. Riley also framed the harm: sanctions are warranted when a producible statement has been destroyed and the information is not otherwise available, particularly where the witness is central and the defense cannot reconstruct the lost material without leaning on the very witness it seeks to impeach.

The line between this scenario and the notes-in-a-report scenario is decisive. Discarding rough jottings whose substance survives in a disclosed report is usually harmless; destroying a signed statement, an adopted writing, a verbatim recording, or a witness’s own document that no report fully preserves is a violation that calls for a remedy.

The Implied Election Not to Produce

The § 3500(d) sanction is not limited to open defiance of a court order. A prosecutor who fails to produce a statement when it is properly requested can be treated as having made an implied election not to comply, which triggers the same consequences as an outright refusal.

In United States v. Kasouris, the Fifth Circuit explained that “the prosecutor’s failure to deliver the document when first requested is deemed to be an implied election not to produce.” The government does not get to decide unilaterally whether a document is a statement; when that question is contested, it is for the judge. Where the prosecution failed to produce a signed statement despite repeated demands, the court held the trial judge should have gone beyond striking the witness’s testimony and declared a mistrial, because the testimony was highly damaging and its prejudice could not be erased.

The implied-election doctrine matters because government nonproduction is rarely framed as defiance. More often the prosecutor asserts a document is not a statement, or simply does not turn it over. Kasouris makes clear that this posture, once the court has ordered or should have ordered production, carries the § 3500(d) consequence. The defense should frame a nonproduction as an election, so the mandatory sanction is squarely on the table.

The choice of remedy still turns on prejudice. Kasouris shows that where stricken testimony has already reached the jury and cannot be neutralized by an instruction to disregard, the interests of justice can require a mistrial rather than a strike — the escalation the statute expressly authorizes.

Harmless Error and Choosing Between Striking and Mistrial

Even a genuine nonproduction does not always upset a conviction. Jencks Act violations are subject to harmless-error review, and the choice between striking testimony and declaring a mistrial rests on how culpable the government was and how much the defense was hurt.

Riley set out the framework: a court’s decision to strike testimony should rest on the government’s culpability for the material’s unavailability and the injury to the defendant, and a violation is subject to harmless-error analysis. Where a substitute for the missing statement exists — the same information reaches the defense another way — testimony need not be stricken. But where the destroyed statement is critical and no adequate substitute exists, failing to impose a meaningful sanction is reversible error.

The Supreme Court’s harmless-error gloss comes from Killian, which approved treating nonproduction as harmless when the very same information was already in the defense’s possession through other produced statements or the witness’s own admissions. The reviewing court asks whether the missing material would have made a difference to the defense’s ability to cross-examine, not merely whether a technical breach occurred.

These principles cut both ways for the defense. To obtain a real remedy, counsel must show that the lost statement was genuinely useful and not duplicative — that its absence disabled a line of impeachment that mattered. Conversely, when the government argues harmlessness, the defense should identify precisely what the missing statement could have shown and why no other document filled the gap. The strength of that prejudice showing usually determines whether the court strikes testimony, grants a mistrial, or lets the verdict stand.

Preserving the Right to a Remedy

Because remedies turn on preservation, timing, and a clear record, the defense should act before the material disappears and object precisely when it has. A remedy is far easier to obtain when counsel has laid the groundwork than when a violation surfaces mid-trial with no record behind it.

Several steps help. Send preservation letters early, demanding that agents retain rough notes, recordings, and drafts — especially in circuits that require preservation — so that later destruction cannot be excused as routine. When a witness testifies and a statement is not produced, move for production on the record and, if it is refused or the material is gone, frame the nonproduction as an implied election under Kasouris and ask the court to strike the testimony.

If striking cannot cure the prejudice — because the jury has already heard damaging testimony that the missing statement was needed to attack — request a mistrial, the escalation § 3500(d) authorizes. Build the prejudice record by explaining, concretely, what the lost statement would have shown and why no disclosed document substitutes for it, the very showing Riley and Killian make decisive.

Finally, distinguish the two destruction scenarios in the argument itself. If the government points to Brown and says the notes were incorporated into a disclosed report, counsel should test that claim — whether the report truly captured everything, and whether the destroyed item was independently a producible statement under Carrasco. The remedy often depends on which scenario the facts fit.

Where This Fits

This guide is one of four situations that arise under the Motion to Compel Jencks Act Material. Start with the parent motion for the overall framework, or move to a related fact pattern:

What the Case Law Says

These decisions—verified against primary sources—control how this issue is litigated. Every case still turns on its own facts.

• Killian v. United States, 368 U.S. 231 (1961) — Good-faith destruction of preliminary notes, after their data was transferred to a formal record per normal practice, does not violate the Jencks Act.
• United States v. Kasouris, 474 F.2d 689 (5th Cir. 1973) — Failure to deliver a statement when first requested is an implied election not to produce; here a mistrial, not just striking, was required.
• United States v. Brown, 303 F.3d 582 (5th Cir. 2002) — Nothing in the Jencks Act requires preserving rough notes after they are incorporated into a disclosed 302; routine destruction gave no relief.
• United States v. Riley, 189 F.3d 802 (9th Cir. 1999) — Under 3500(d), striking rests on government culpability and injury to the defendant; violations get harmless-error review, but destroying a statement is a violation even in good faith.
• United States v. Carrasco, 537 F.2d 372 (9th Cir. 1976) — Destroying a producible witness statement is a violation no less because pursued in good faith, unless destroyed pre-prosecution for unrelated reasons.

General summaries of published opinions for information only — not predictions about any specific case.