Receiving a federal grand jury subpoena can be alarming, especially if you have never been involved in a federal investigation before. Many people assume a subpoena means they are being charged with a crime, but that is not always the case. Still, a federal grand jury subpoena should never be ignored or taken lightly. Understanding what it means and how to respond is critical to protecting your rights.
At Griffin Law Office, APC, our San Diego criminal defense attorney advises clients throughout California who are facing federal investigations and subpoena demands. The following guidance explains what to do if you are receiving a federal grand jury subpoena and how legal counsel can help.
What is a Federal Grand Jury Subpoena?
A federal grand jury subpoena is a formal legal order requiring you to provide testimony, documents, or other evidence as part of a federal investigation. These subpoenas are commonly issued in cases involving fraud, drug trafficking, financial crimes, conspiracy allegations, or complex federal offenses.
There are two main types of subpoenas:
- A subpoena ad testificandum, which requires you to testify.
- A subpoena duces tecum, which requires you to produce documents or records.
Both forms carry legal obligations, and failure to comply can result in severe penalties.

Tip One: Do Not Ignore the Subpoena
Ignoring a federal grand jury subpoena is one of the most serious mistakes you can make. Subpoenas are enforceable court orders. Failure to respond can lead to contempt charges, fines, or even arrest.
Even if you believe the subpoena was sent in error or does not apply to you, you must take action promptly. Federal subpoena help should be sought immediately to determine the appropriate response.
Tip Two: Do Not Assume You Are Only a Witness
Many people believe they are safe simply because they are labeled a “witness.” In reality, witnesses can quickly become targets or subjects of an investigation.
Prosecutors are not required to tell you whether you are under investigation. Anything you say or provide may be used to build a case, which is why legal advice on subpoenas is essential before responding.
Tip Three: Contact Our Federal Criminal Defense Attorney Immediately
Before producing documents or appearing before a grand jury, you should speak with our federal criminal defense attorney. Federal law and procedure differ significantly from those in state criminal cases, and errors can have permanent consequences.
Our skilled San Diego federal criminal defense attorney can:
- Communicate with federal prosecutors on your behalf.
- Clarify the scope of the subpoena.
- Seek extensions or modifications if appropriate.
- Protect against self-incrimination.
- Prepare you for testimony if required.
Early legal guidance often determines whether a situation escalates or remains manageable.
Tip Four: Preserve Documents and Evidence Carefully
If your subpoena requests documents, emails, financial records, or digital files, preservation is critical. Destroying, altering, or hiding evidence can lead to obstruction charges, even if you believe the material is insignificant.
Do not delete emails, text messages, or files. Do not attempt to reorganize records without legal guidance. A defense attorney can help ensure compliance while protecting privileged or irrelevant materials.
Tip Five: Understand Your Fifth Amendment Rights
If you are required to testify, you may have the right to invoke the Fifth Amendment to avoid self-incrimination. However, invoking this right incorrectly or inconsistently can cause legal problems.
Our federal criminal defense attorney in San Diego County can assess:
- Whether testifying poses personal legal risk.
- When and how to assert constitutional protections.
- Whether immunity discussions are appropriate.
- How to answer questions truthfully without volunteering harmful information.
Testifying without preparation is risky, even for innocent individuals.
Tip Six: Do Not Discuss the Subpoena with Others
Federal investigations rely heavily on information control. Discussing your subpoena with coworkers, friends, or family members can inadvertently create new legal risks.
Statements made to others may be repeated to investigators or subpoenaed later. In some cases, discussing an investigation can even be interpreted as witness tampering. Your attorney should be the primary point of discussion.
Tip Seven: Take The Process Seriously, Even If Charges Are Not Filed
A federal grand jury subpoena often signals that prosecutors are building a case. While charges may never be filed against you, the process itself is serious and strategic.
Responding carefully can:
- Prevent misinterpretation of evidence.
- Limit personal exposure.
- Avoid unnecessary legal entanglement.
- Position you more favorably if the investigation expands.
Receiving a federal grand jury subpoena is not the time for guesswork or assumptions.
How Our Federal Criminal Defense Attorney Can Help in San Diego
Federal investigations in San Diego often involve multiple agencies, including federal task forces and prosecutors with significant resources. Navigating this process alone places individuals at a disadvantage.
Our San Diego federal criminal defense attorney provides:
- Strategic subpoena legal advice.
- Protection against self-incrimination.
- Guidance on document production.
- Representation during grand jury testimony.
- Advocacy if the investigation escalates.
Legal representation ensures that your rights are protected at every stage of the federal process.
Speak With Our San Diego Federal Defense Attorney Today
If you receive a federal grand jury subpoena, time is of the essence. The decisions you make early can shape the outcome of the investigation and your future.
At Griffin Law Office, APC, our San Diego criminal defense attorney advises clients throughout California on federal subpoena matters and grand jury proceedings. Call 619-269-2131 or visit us online to schedule a confidential consultation. Protecting your rights from the start is essential.
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