Federal Grand Juries Explained: What to Do if You Receive a Subpoena
Oct. 7, 2026
If you’ve just opened your mail and found a subpoena from a federal grand jury, you’re likely wondering what it means and what to do next. In simple terms, a federal grand jury subpoena is an official order requiring you to provide testimony, documents, or other evidence in a federal criminal investigation.
Ignoring the subpoena is not an option—failing to respond can result in serious legal consequences, including potential contempt charges. However, not every subpoena means you are under investigation yourself; sometimes, you’re simply a witness. Before you respond, it’s crucial to understand your rights, obligations, and potential risks.
As a law firm with an attorney who has called Modesto home for over 25 years, we know how confusing and unsettling federal legal issues can be—especially if you’ve never dealt with the federal court system before. At Roth Legal, A Professional Law Corporation, we help people throughout Modesto, Stockton, Manteca, and Merced understand what’s happening and take the right steps when faced with a grand jury subpoena. If you’ve received a subpoena or think you might, we urge you to act quickly to protect your interests and avoid unnecessary complications.
What Is a Federal Grand Jury and Why Might You Receive a Subpoena?
A federal grand jury is a group of citizens assembled to investigate potential federal crimes and decide whether there is probable cause to bring criminal charges. Unlike trial juries, grand juries don’t determine guilt or innocence. Instead, they gather evidence and decide whether to file charges. You might receive a subpoena from a grand jury for several reasons:
The government believes you have information relevant to its investigation
You may be a witness, a subject (someone whose conduct is under review), or, in rare cases, a target (someone likely to be charged)
Subpoenas can require you to testify, produce documents, or both
Not every recipient is a suspect. If you’re unsure of your status, consult a qualified attorney before responding or discussing your subpoena with anyone else.
What Are Your Rights and Obligations?
If you receive a federal grand jury subpoena, you must comply. You also have important rights:
Right to counsel: You have the right to consult and be represented by an attorney. In most cases, your attorney cannot accompany you into the grand jury room, but they can prepare you, advise you on your rights, and protect your interests.
Right to remain silent: You have the right not to incriminate yourself. If you believe your answers may expose you to criminal liability, your attorney can guide you on invoking your Fifth Amendment rights.
Obligation to Respond: Failing to respond, ignoring deadlines, or destroying evidence can lead to contempt charges or obstruction allegations.
The specifics of your obligations and rights may vary depending on whether you are a witness, subject, or target. If you’re unsure, your attorney can contact the prosecutor to clarify your status.
What Should You Do Immediately After Receiving a Subpoena?
The most important step is not to panic or act impulsively. Here’s what we recommend:
Do not destroy, alter, or hide any documents or evidence. Tampering with evidence can itself result in criminal charges.
Contact a qualified federal criminal defense attorney immediately. Do this before contacting the prosecutor or law enforcement.
Do not discuss the subpoena or investigation with others, including coworkers, friends, or family. Anything you say could be used as evidence.
Let your attorney review the subpoena and any related correspondence. They can assess what’s being requested, determine your status, and help craft a response.
If you’re required to testify, your attorney will help you prepare for questioning, review possible topics, and advise you on how to handle difficult or unexpected questions. If you’re required to produce documents, your attorney will help you identify what must be provided so you don’t inadvertently waive any legal privileges.
Risks of Ignoring or Mishandling a Federal Grand Jury Subpoena
Ignoring a federal subpoena or responding incorrectly can have significant consequences. Potential risks include:
Contempt of Court: Failing to appear or produce requested evidence can result in a court order to comply, fines, or even jail time.
Obstruction of Justice: Destroying, altering, or hiding evidence is a separate federal offense.
Waiver of Rights: Responding without legal advice can cause you to waive important rights, such as attorney-client privilege or the right against self-incrimination.
The federal system is different from California state courts in both substance and procedure. If your matter involves both state and federal law, or if you have questions about state court subpoenas, we can help you navigate those distinctions.
Contact a Federal Criminal Defense Attorney
If you’ve received a federal grand jury subpoena—whether you think you’re a witness, subject, or target—the stakes are too high to go it alone. Even if you believe you have nothing to hide, the government’s interest may not be clear, and mistakes can have lasting consequences.
The sooner you seek advice, the more options you may have to clarify your status, protect your interests, and avoid unnecessary risks. Our Attorney, Ryan Roth, has served Modesto and the surrounding communities for 25 years, focusing his practice on defending people facing serious criminal charges in both state and federal court.
After starting Roth Legal, A Professional Law Corporation in 2013, he made it his mission to be a relatable, trustworthy resource—someone who understands what clients are facing and knows how to take the issue off their hands.
When you work with us, you get more than legal advice. We explain how federal grand jury subpoenas work, what your real-world options are, and what steps make the most sense for your situation. If you’re searching for federal criminal defense in Modesto, we invite you to reach out for a confidential consultation to learn how we can help you respond confidently to a federal grand jury subpoena.