The When, Where, and How of the Offense

The Classic Particulars the Indictment Leaves Out

The oldest use of a bill of particulars is to supply the plain facts of the offense — when it happened, where it happened, and how the government says it was carried out — that a bare indictment omits. These are the details a defendant needs to build a defense, yet an indictment can satisfy the Constitution while leaving all three unstated.

An indictment is legally sufficient if it recites the elements of the offense, fairly informs the defendant of the charge, and lets him plead an acquittal or conviction against a later prosecution. It does not have to read like a police report. When it clears that bar but still leaves the defense unsure what conduct on what day at what place it must answer for, the remedy is a bill of particulars rather than dismissal. The Fifth Circuit put it directly in United States v. Haas: the function of a bill of particulars is to “cure omissions of details that might enable the defendant to prepare his defense.”

Haas also shows that the request is not a formality. There, an obstruction indictment alleged only that the defendant communicated “information,” without saying what. The court held the indictment survived a motion to dismiss but did not fully meet the government’s obligation to let the defendant prepare, so a bill of particulars was “an appropriate method of seeking such information,” and the failure to grant it in an appropriate case “may well be reversible error.” The when, where, and how are exactly the omissions a bill is meant to cure.

What makes Haas valuable is its recognition that an indictment can be both legally sufficient and practically inadequate at the same time. A charge that tracks the statute and clears a motion to dismiss may still leave a defendant unable to say what day, what place, or what conduct he must account for. The court treated the bill of particulars as the bridge between those two points — the mechanism that supplies enough of the missing detail to make the defense possible without rewriting the indictment. For the ordinary defendant, that means a thin charge is not a dead end; it is an occasion to ask for the particulars the government left out.

Why ‘On or About’ Dates Are Hard to Pin Down

Indictments almost always allege that an offense occurred “on or about” a date, and courts let that convention stand. Because the time of an offense is usually not one of its elements, the government is generally not required to prove — or to particularize — the exact date, only a date reasonably near the one charged and within the limitations period.

The Fifth Circuit explained the rule in United States v. Cochran: “an allegation as to the time of the offense is not an essential element of the offense charged in the indictment and, within reasonable limits, proof of any date before the return of the indictment and within the statute of limitations is sufficient.” The court added that the “width of the time window opened by an on or about allegation cannot be abstractly measured” and that the real question is a pragmatic one — whether, on the facts, the defendant knew what he was defending.

That flexible standard is why a naked demand for an exact date usually fails. If the government can prove the crime occurred reasonably near the charged date, the “on or about” language does its work and the court sees no need to compel a pinpoint date. A defendant who wants the date narrowed therefore has to explain why the approximation actually impairs the defense, rather than simply asserting a right to precision the law does not guarantee.

The reason for this leniency is structural. Requiring the government to prove an exact date would let a defendant escape a valid charge on a technicality — a witness’s honest inability to recall whether an event fell on the fourteenth or the sixteenth — even where there is no doubt the crime occurred. The “on or about” convention exists to prevent that windfall while still giving fair notice of roughly when the conduct happened. The practical consequence for the defense is that a date request has to be justified by something more than a desire for precision; it needs a reason the vagueness matters, which the next section supplies.

When the Date Really Does Matter: Alibi and Limitations

There are two situations where a vague date genuinely handicaps the defense: when the defendant has an alibi, and when the charged conduct sits near the edge of the statute of limitations. In both, the argument for particulars is far stronger, because the date stops being a formality and becomes central to a defense.

The alibi problem is real but limited. In United States v. King, the Fifth Circuit rejected the contention that “time becomes a material element of a criminal offense when the defense of alibi is advanced,” and approved an “on or about” instruction even though the defendants relied on an alibi. So an alibi does not automatically entitle a defendant to an exact date. What it does is supply a concrete reason a court should exercise its discretion to require the government to narrow a sprawling range — a defendant cannot account for his whereabouts across a span of months, but he may be able to account for a single day.

The limitations problem is different. Under the general federal limitations statute, 18 U.S.C. § 3282, most non-capital offenses must be charged within five years of commission. When an indictment’s broad or open-ended dates make it impossible to tell whether the conduct falls inside that window, particulars can force the government to commit to a date and expose a limitations bar. Both King and Cochran emphasize that the proof must fall within the limitations period, which gives the defense a principled basis to demand a date the government must stand behind.

These two situations share a common feature that a court will recognize: in each, the date is not a formality but an operative fact the defense must engage. An alibi is only as good as the day it covers, and a limitations defense lives or dies on which side of the five-year line the conduct falls. A motion that explains that dependence — that the defense literally cannot be prepared without knowing the date — converts a request the court would ordinarily refuse into one it has a concrete reason to grant. The lesson is to lead with the defense the date enables, not with an abstract complaint that the indictment is vague.

Where and How: Location, Venue, and Manner of the Offense

Beyond the date, the defense often needs to know where the offense allegedly occurred and how the government says it was committed. Location can matter for both defense preparation and venue, and the manner and means can be the difference between charges a defendant can meet and a case he is left to guess at. Courts will order these particulars when the indictment leaves a genuine gap, but they stop short of compelling the government to explain its evidence.

The table below sorts the common when-where-how requests by how federal courts tend to treat them.

The pattern reflects a single principle. A bill of particulars fills gaps in the charge — the who, what, when, and where a defendant must answer — but it is not a route to the government’s proof of how it intends to establish those facts. Requests framed as notice tend to succeed; requests that read as demands for the evidence tend to fail. That boundary is developed in full on the companion page distinguishing a bill of particulars from discovery.

Location deserves particular attention because it does double duty. Beyond helping the defense prepare, the place of the offense can bear on venue — the constitutional requirement that a federal case be tried in the district where the crime occurred. When an indictment describes conduct spread across districts, or is silent on where the charged act happened, a request for the location is not merely about preparation; it can expose whether the case was even brought in the right court. That gives a where request a firmer footing than a bare demand for detail, because it ties the particular to a recognized legal protection rather than to convenience.

The Limit: A Bill Cannot Save a Defective Indictment

There is an important ceiling on this device. A bill of particulars can add detail to a valid but skeletal indictment; it cannot rescue an indictment that fails to charge an offense in the first place. Knowing the difference tells a defendant whether the right motion is a request for particulars or a motion to dismiss.

The Supreme Court drew the line in Russell v. United States. The Court held that where a statute uses generic terms, an indictment must “descend to particulars” and state the facts and circumstances that inform the accused of the specific offense — and it reaffirmed “the settled rule that a bill of particulars cannot save an invalid indictment.” If the charging document omits an essential element or fails to identify the core of the criminality, no amount of later detail from the prosecutor can supply what the grand jury never charged.

The practical consequence is a two-step diagnosis. If the indictment states an offense but leaves the defense unsure of the when, where, or how, a bill of particulars under Rule 7(f) is the right tool, as Haas confirms. If the indictment fails to state an offense at all, the answer is a motion to dismiss under Rule 12, because Russell says particulars cannot cure that defect. Filing the wrong motion wastes the opportunity, so the first task is to decide which problem the indictment actually presents.

Making a Focused When-Where-How Request

Because courts grant particulars that fill genuine gaps and deny those that seek the government’s proof, the effective motion is specific and reason-driven. It identifies the exact fact the indictment omits and explains why the defense cannot proceed without it, rather than asking broadly for the date, place, and manner of everything charged.

Three moves make a when-where-how request stronger. First, tie any demand to narrow a date to a concrete defense — an alibi that requires a single day, or a limitations question that turns on which side of the five-year line the conduct falls. Second, ask for a specific location when venue or preparation depends on it, not as a reflexive add-on. Third, keep manner-and-means requests modest, seeking enough to understand the charge without crossing into how the government will prove it, since that is where courts draw the line.

Timing follows Rule 7(f): the motion comes before or within 14 days after arraignment, or later if the court permits, and the decision rests in the trial court’s discretion. A defendant facing a vaguely dated or thinly described federal charge should have counsel assess which particulars are realistically obtainable and whether the better first step is a bill of particulars or a challenge to the indictment itself.

One more discipline improves these motions: separate the requests the defense truly needs from the ones that would merely be nice to have. Courts are more receptive to a short, targeted list — the single date an alibi turns on, the specific address that fixes venue — than to a long recitation that asks for the exact time, place, and manner of every act charged. A focused motion signals that the defense is seeking notice, not rummaging for evidence, and it leaves the court with a clean question it can answer in the defendant’s favor rather than a sprawling one it is inclined to deny wholesale.

Where This Fits

This guide is one of four situations that arise under the Motion for a Bill of Particulars. 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.

• Russell v. United States, 369 U.S. 749 (1962) — An indictment using generic statutory terms must descend to particulars, and a bill of particulars cannot save an invalid indictment.
• United States v. Haas, 583 F.2d 216 (5th Cir. 1978) — The function of a bill of particulars is to cure omissions of details that might enable the defendant to prepare his defense.
• United States v. King, 703 F.2d 119 (5th Cir. 1983) — Time is not a material element merely because an alibi is raised, and an 'on or about' instruction was proper where the date was approximate.
• United States v. Cochran, 697 F.2d 600 (5th Cir. 1983) — Time is not an essential element; proof of any date before indictment and within limitations, reasonably near the charged date, is sufficient.

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