Indictment Definition: What It Means and How It Works

An indictment is a formal written accusation, issued by a grand jury, charging a person with a serious crime. It means a panel of citizens reviewed the prosecutor’s evidence and decided there is enough to send the case to trial. It does not mean the person is guilty. In federal court, any offense punishable by more than one year in prison must be charged by indictment unless the defendant waives that right.¹

Indictment Is Not Conviction

The gap between being indicted and being convicted is wide. A conviction requires proof beyond a reasonable doubt at trial, where the defendant can cross-examine witnesses and present a defense. An indictment only requires probable cause, a much lower standard. The grand jury has to be persuaded that a crime probably occurred and that this person probably committed it. That is enough to open a case, and nothing more.

An indictment does two things at once. It moves an investigation into formal court proceedings by putting the government’s accusations on the record. And it gives the defendant official notice of the specific conduct charged, which the Sixth Amendment requires so the defense can actually be prepared.²

How a Grand Jury Issues One

The Fifth Amendment says no person can be held to answer for a capital or otherwise infamous crime without a grand jury indictment.³ A federal grand jury has between 16 and 23 members drawn from the community.⁴ They hear evidence from the prosecutor behind closed doors. No judge sits with them. The suspect’s attorney is not in the room.

If at least 12 jurors agree the evidence is sufficient, they return a “true bill,” which is the indictment. If not, they return a “no bill,” and the matter stops there. A unanimous vote is not required. The grand jury foreperson signs the indictment to certify the vote.⁵

Grand jury proceedings are secret by design. No one except the jurors may be present during deliberations and voting, and government attorneys involved in the proceedings cannot disclose what happened inside the room. A knowing violation can be punished as contempt of court.⁵ The secrecy protects witnesses, keeps suspects from fleeing before charges land, and lets jurors deliberate without outside pressure.

What the Document Contains

Federal rules require a plain, concise written statement of the essential facts behind the charge. A valid indictment identifies the defendant, describes the alleged conduct including when and where it happened, and cites the specific law the defendant is accused of violating.¹ In rare cases where the suspect’s identity is unknown, the indictment can describe the person by a DNA profile instead of a name.

These details are not formalities. A vague or inaccurate indictment can be challenged by motion to dismiss, because it undermines the defense and creates a risk that the same conduct could be charged twice later on.

Indictment, Information, and Complaint

An indictment is not the only way to charge someone. Two other documents come up often, and they are easy to confuse with an indictment.

An information is filed directly by the prosecutor without a grand jury. In federal court, an information can substitute for an indictment on misdemeanors, and on felonies when the defendant waives the grand jury in open court. That waiver sometimes happens as part of plea negotiations to move the case along.¹

A criminal complaint is a preliminary charging document, often used to secure an arrest warrant before a grand jury has had time to review the evidence. A complaint requires a judge to find probable cause based on sworn statements, but it is temporary. The government still has to obtain an indictment or file an information within a set deadline to keep the case alive.⁶

All three accuse someone of a crime. They differ in how much independent review stands behind them. An indictment has the most, because a panel of citizens must approve it. An information rests on the prosecutor’s judgment, sometimes checked by a judge at a preliminary hearing. A complaint is the most provisional and cannot sustain a prosecution on its own.

Sealed and Superseding Indictments

An indictment is not always public the moment it is returned. A court can order one sealed, keeping its existence secret until the defendant is in custody or released pending trial. While sealed, the clerk keeps the document locked away, and no one may reveal that it exists except as needed to issue or carry out an arrest warrant.⁵ Sealed indictments are common in cases involving flight risks, ongoing investigations, or multiple defendants who might warn each other.

A superseding indictment replaces an earlier one that has already been filed. Prosecutors use one to add new charges, drop existing charges, or bring in additional defendants as the investigation develops. It has to go through the same grand jury process as the original. Once returned, it becomes the operative charging document, and the defendant is arraigned again on the new charges.

Federal and State Differences

The Fifth Amendment’s grand jury requirement applies only to federal prosecutions. In Hurtado v. California, the Supreme Court held that the Constitution does not require states to use grand juries, and that decision has never been overturned.⁷ States are free to charge felonies by other methods.

Roughly half the states require grand jury indictments for at least some serious felonies. The rest allow prosecutors to bring felony charges by filing an information directly with the court after a judge finds probable cause at a preliminary hearing. A handful of states let the prosecutor choose. Whether a defendant goes before a grand jury depends on where the case is filed and whether it is federal or state.

What Happens After an Indictment

Once a grand jury returns an indictment, the court issues an arrest warrant or, if the government asks for one, a summons directing the defendant to appear.⁸ A sealed indictment becomes public at this point, and the defendant and defense counsel can finally review the specific charges.

The next step is the arraignment. The court confirms the defendant has a copy of the indictment, reads or explains the charges, and asks for a plea. Most defendants plead not guilty at arraignment, including those who may later negotiate a plea, because it preserves their options. The court also addresses bail and conditions of release. In some situations a defendant can skip appearing in person by filing a written waiver signed by both the defendant and counsel, with a not-guilty plea attached.⁹

When the Grand Jury Declines to Indict

A no bill does not necessarily end things. Double jeopardy does not attach at the grand jury stage because no trial has begun, so the government can present the same case to a different grand jury or resubmit it to the same one. Department of Justice policy requires prosecutors to get approval from the responsible United States Attorney before resubmitting a case a grand jury already rejected.¹⁰

In practice, a no bill often leads prosecutors to either strengthen the evidence before trying again or close the investigation. A no bill in a high-profile case does not formally clear the suspect. It means the government did not meet even the relatively low standard needed to charge them.

1
Office of the Law Revision Counsel. Federal Rules of Criminal Procedure Rule 7 – The Indictment and the Information
2
Constitution Annotated. Amdt6.4.7 Notice of Accusation
3
Constitution Annotated. Amdt5.2.2 Grand Jury Clause Doctrine and Practice
4
Office of the Law Revision Counsel. 18 U.S.C. 3321 – Number of Grand Jurors; Summoning Additional Jurors
5
Legal Information Institute. Federal Rules of Criminal Procedure Rule 6 – The Grand Jury
6
Office of the Law Revision Counsel. 18 U.S.C. 3161 – Time Limits and Exclusions
7
Justia. Hurtado v. California, 110 U.S. 516 (1884)
8
Legal Information Institute. Federal Rules of Criminal Procedure Rule 9 – Arrest Warrant or Summons on an Indictment or Information
9
Legal Information Institute. Federal Rules of Criminal Procedure Rule 10 – Arraignment
10
United States Department of Justice. Justice Manual 9-11.000 – Grand Jury