Many people learn they are part of a federal investigation from a piece of paper: a target letter from the U.S. Attorney’s Office, or a subpoena to appear before a federal grand jury. Either one means the investigation is already well along, and what happens next can shape whether charges are filed and what they look like.
This guide explains what a target letter means, the difference between a target, a subject, and a witness, how a federal grand jury works, and what to do and not do in the first days. It applies in both the Eastern and Western Districts of Missouri.
The letter
What does a federal target letter mean?
That prosecutors consider you a likely defendant.
Under the Justice Department’s own manual, a target is a person the prosecutor or the grand jury has substantial evidence linking to a crime and who, in the prosecutor’s judgment, is a putative defendant. A target letter usually says that, names the general subject of the investigation, describes the person’s rights, and invites the person or their lawyer to contact the prosecutor.
A target letter is not an indictment, and not every target is charged. It is also not a formality. Prosecutors often send one when they are close to seeking an indictment, and the window between the letter and the charge can be short.
Target
Substantial evidence links you to the crime, and you are a likely defendant.
Subject
Your conduct is within the scope of the investigation. A subject can become a target as the evidence develops.
Witness
The government believes you have information about someone else’s conduct. Witness status can change, too.
Which one am I?
A lawyer can usually ask the prosecutor directly. The answer drives every other decision, including whether to testify, produce documents, or meet with agents.
The grand jury
What happens if you get a federal grand jury subpoena?
You are legally required to respond, but you keep important rights.
A federal grand jury is a group of citizens who hear evidence presented by prosecutors and decide whether there is probable cause to indict. Its proceedings are closed. A subpoena may require testimony, documents, or both.
- No lawyer in the room. Under Rule 6(d) of the Federal Rules of Criminal Procedure, only the prosecutors, the witness, an interpreter if needed, and a court reporter may be present. A witness can usually step outside to consult with their lawyer during questioning.
- The Fifth Amendment applies. A witness can decline to answer questions that could incriminate them. Whether and how to assert the privilege is a decision to make with counsel, before the appearance.
- Immunity can change the picture. The government can obtain a court order compelling testimony in exchange for immunity, which protects against use of the testimony and anything derived from it.
- Witnesses may talk about their own testimony. Grand jurors and prosecutors are bound by secrecy, but under Rule 6(e) a witness generally is not.
- Document subpoenas have their own issues, including scope, privilege, and, in some cases, whether the act of producing documents is itself testimonial.
The first days
What should I do after receiving a target letter?
Talk to a lawyer before you talk to anyone else.
Do not talk to agents
Anything you say can be used against you, and a false statement to a federal agent is a separate crime under 18 U.S.C. § 1001, even if the underlying investigation goes nowhere. Politely decline and give your lawyer’s name.
Do not delete or change anything
Destroying, altering, or concealing records to obstruct a federal investigation is its own felony under 18 U.S.C. § 1519, with a maximum of 20 years. Keep devices, emails, texts, and files exactly as they are.
Do not contact others involved
Calls to coworkers, business partners, or co-defendants about the investigation can look like witness tampering, and those people may already be cooperating.
Do not ignore the deadline
A target letter often invites contact by a date. Letting it pass gives up any chance to be heard before the grand jury votes.
Before indictment
Can a lawyer help before federal charges are filed?
Often, yes, though how much depends on the case.
Before an indictment, a defense lawyer can serve as the go-between with agents and prosecutors, so that you are not questioned directly. A lawyer can learn your status, find out what the government is focused on, and, if charges are coming, arrange a voluntary appearance instead of an arrest, which can make a real difference at the detention hearing.
In some cases, a lawyer can present information that affects the charging decision, or set up a proffer meeting when cooperating serves the client’s goals. That room exists mainly when the client’s interests and the government’s interests line up. A proffer is not right for everyone, and it is never right for a person who intends to contest the charges.
More on federal investigations: federal fraud investigations and federal detention hearings. And see why lying to agents is its own crime.
FAQ
Target letter and grand jury questions
Does a target letter mean I will be indicted?
Not necessarily, but it means prosecutors view you as a likely defendant. Some targets are never charged, and early representation can sometimes affect what happens.
Can I refuse a federal grand jury subpoena?
No. Ignoring it can lead to contempt. But you can assert the Fifth Amendment privilege where it applies, and a lawyer can sometimes negotiate the scope, timing, or form of compliance.
Can my lawyer go into the grand jury room with me?
No. Only the prosecutors, the witness, an interpreter, and a court reporter are allowed. Witnesses can usually leave the room to consult with their lawyer.
How long does a federal investigation take?
It varies from months to years. The general federal statute of limitations is five years from the offense under 18 U.S.C. § 3282, though some offenses have longer periods.
Should I talk to the FBI if they come to my house?
You do not have to. You can politely decline to answer questions and say you will have a lawyer contact them. Do not lie, and do not try to explain.
See our federal criminal defense page, or call 573-638-8529.
Talk to us
The time before charges is the time to act.
If you received a target letter or a grand jury subpoena anywhere in Missouri, call before you respond to anyone.
Attorney advertising. The choice of a lawyer is an important decision and should not be based solely upon advertisements. This article is general information about federal investigations as of October 2026, not legal advice, and it does not create an attorney-client relationship. The outcome of any matter depends on its facts.
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