A DC grand jury is a panel of 16 to 23 citizens that meets in private to review evidence from a prosecutor and decide whether there is probable cause to formally charge someone with a crime. Understanding how a DC grand jury works starts with a basic fact about the city: two parallel grand jury systems operate here, and which one hears a case depends on whether the alleged crime is local or federal.1DC Courts. Superior Court Rules of Criminal Procedure – Section: Rule 6
The Two DC Grand Jury Systems
The Superior Court of the District of Columbia empanels grand juries for offenses charged under the DC Code. The United States District Court for the District of Columbia empanels its own grand juries for federal offenses. The size of the panel is the same in both courts, and most procedural rules are shared, but the time commitment is very different: Superior Court panels sit for about five weeks of daily service, while federal panels run roughly 18 months, typically meeting about eight days a month.2United States District Court for the District of Columbia. Jury Frequently Asked Questions Either court can extend a term when an open investigation requires it.
What the Grand Jury Decides
A grand jury is not a trial jury. It does not decide guilt. Its job is to look at the evidence a prosecutor presents, which may include witness testimony, documents, and forensic reports, and determine whether there is probable cause to believe a crime occurred and that the person named committed it. Probable cause is a far lower standard than the “beyond a reasonable doubt” standard used at trial; it asks only whether a reasonable person would conclude the suspect is likely responsible.3United States Department of Justice. Justice Manual 9-11.000 – Grand Jury
After hearing the evidence, the jurors deliberate alone and vote. At least 12 must agree that the standard is met for the panel to return a “true bill,” which is the formal indictment. The foreperson signs the indictment and records how many jurors voted in favor, though that tally stays sealed unless a judge orders otherwise.4DC Courts. Superior Court Rules of Criminal Procedure – Section: Rule 6(c) If the panel finds the evidence insufficient, it returns a “no bill” and the prosecution cannot proceed on that charge.5Library of Congress. Federal Grand Juries – The Law in a Nutshell A no bill does not technically prevent prosecutors from going to a different grand jury with new evidence, but in practice it signals a serious weakness in the case.
Who Is in the Room
Grand jury sessions are closed. While the panel is receiving evidence, only four categories of people may be present: government prosecutors, the witness being questioned, any needed interpreter, and a court reporter. During deliberations and voting, even those people step out. Only the jurors remain, along with an interpreter if one is assisting a hearing-impaired juror.6DC Courts. Superior Court Rules of Criminal Procedure – Section: Rule 6(d)
No judge is present. No defense attorney is allowed in. The grand jury phase is an investigation, not an adversarial hearing, and the secrecy serves several concrete purposes: it protects people who are investigated but never charged, it keeps suspects from fleeing before an indictment issues, and it lets witnesses speak candidly. Jurors, prosecutors, interpreters, and court reporters are all bound by that secrecy. Federal panels in DC follow Federal Rule of Criminal Procedure 6(e); Superior Court panels follow the local version of the same rule.7Legal Information Institute. Federal Rules of Criminal Procedure Rule 6 – The Grand Jury
What a Grand Jury Can Compel
A grand jury can reach well beyond what police can do on their own. It can issue subpoenas forcing witnesses to appear and testify under oath, and a separate type of subpoena, the subpoena duces tecum, forces the production of documents, financial records, and digital communications. Federal grand juries sitting in the U.S. District Court can serve those subpoenas anywhere in the country.3United States Department of Justice. Justice Manual 9-11.000 – Grand Jury These tools exist because the grand jury is meant to function as an independent investigative body, not simply as an arm of the prosecutor.
If You Are Called as a Witness
A grand jury subpoena is not a request. You must appear. Once there, you keep your Fifth Amendment right against self-incrimination and can refuse to answer specific questions if truthful answers could expose you to criminal liability. You also have the right to consult an attorney before testifying, during breaks, and after.
What you cannot do is bring your lawyer into the grand jury room. The rules bar it. If a question concerns you, you have to pause, step out, confer with counsel, and come back in. Everything you say inside is under oath and becomes a permanent record that prosecutors can use later at trial, so witnesses with any personal exposure should treat the consultation right as essential rather than optional.
If You Are Called as a Juror
Superior Court grand jurors are paid $30 for each day of actual attendance plus a travel allowance of up to $2 per day. If your employer, public or private, keeps paying your regular salary during service, you do not receive the $30 attendance fee.8D.C. Law Library. District of Columbia Code 15-718 – Juror Fees DC law also bars employers from firing, threatening, or otherwise retaliating against an employee for receiving a jury summons or serving on a grand jury, under DC Code Section 11-1913.9D.C. Law Library. District of Columbia Code 11-1913 – Protection of Employment of Jurors
If serving on the dates assigned would create a real burden, DC law allows deferrals for undue hardship, extreme inconvenience, public necessity, or a temporary physical or mental disability that would interfere with service.10D.C. Law Library. District of Columbia Code 11-1909 – Deferral From Jury Service Procedures are set in the court’s master jury plan, and the court decides each request on its own facts.
After an Indictment Is Returned
Once the foreperson signs a true bill, the indictment is returned to a judge in open court and formally filed. The case moves from investigation to prosecution. The defendant is arraigned, informed of the charges, and given the chance to enter a plea, and gains the full trial rights that do not apply during the grand jury phase, including the right to counsel at every stage and the right to confront witnesses.
DC law puts a clock on the whole process. If someone has been arrested or is being held on bail waiting for grand jury action, the grand jury must either return an indictment or decline charges within nine months. If neither happens, the prosecution is considered abandoned, and the accused is released or has bail discharged. A judge can extend that timeline, but only for good cause, in writing, and with notice to the defendant.