By: Daniel Perlman

If you think you are under a federal investigation, it is best to act quickly and carefully. Federal cases are serious. They involve powerful agencies like the Federal Bureau of Investigation, the DEA, and the Department of Justice. What you do early on can affect the entire legal process and possibly your future. One mistake could make things worse.
Perlman Defense Federal Criminal Lawyers helps people in situations like this. Our firm focuses on federal criminal defense. We understand how the United States Attorney’s Office, federal courts, and law enforcement agencies operate.
We are familiar with the rules and strategies employed during a federal criminal investigation. If you’re facing a target letter, a grand jury subpoena, or a knock at your door from federal agents, we are ready to step in and protect your constitutional rights from day one.
A federal investigation is a formal process where federal law enforcement agencies look into possible violations of federal laws. This could involve crimes like fraud, drug trafficking, conspiracy, or other offenses that fall under United States jurisdiction.
These investigations are handled by agencies such as the FBI, IRS, DEA, or Bureau of Alcohol, Tobacco, Firearms and Explosives. They often begin before the target even knows he or she is being watched.


A federal investigation often begins quietly, and you may not realize you are involved until one of several signs appears. You must pay close attention to these early warnings because the sooner you respond with proper legal counsel, the better your chance of protecting your rights.
Here are some of the most common signs that federal law enforcement is looking into your activities:
If you receive a target letter, it means the United States Attorney’s Office has identified you as someone who may be charged with a federal crime. This letter typically explains the nature of the criminal investigation, outlines your rights under the U.S. Constitution, and advises you to seek a federal criminal defense attorney.
It is a serious step in the investigation process and should never be ignored.
When federal agents such as those from the Federal Bureau of Investigation, Drug Enforcement Administration, or other federal law enforcement agencies visit your home or office, it is likely that you are already involved in an active federal criminal case.
Even if they say you are not a suspect, it is best not to speak with them without your defense attorney present to ensure your constitutional rights are fully protected.
Receiving a grand jury subpoena means you are being asked to provide documents, records, or even testimony in a federal criminal investigation. You might be a witness, a subject, or a target.
This step is part of how the United States Attorney’s Office gathers evidence during a federal investigation, and it is often a sign that criminal charges may soon follow.
If friends, business partners, or co-workers tell you they have been contacted or interviewed by federal agencies, that is another clear warning. Federal prosecutors often begin questioning people close to the case to gather evidence or test theories about the criminal charges they may bring.
These interviews are part of the surveillance operations and evidence-gathering stages of the federal investigation.
One of the strongest signs that you are under federal criminal investigation is if agents have executed a search warrant at your home, office, or other property.
If your phone, laptop, files, or other items were taken, it likely means that federal prosecutors already have substantial evidence and are moving forward with their criminal case. You need a skilled federal defense attorney to intervene immediately.
If you think you are under federal investigation, what you do next can have a major effect on the outcome of your federal case. Many people make mistakes early in the process by acting too quickly, speaking without legal advice, or deleting important records.
These actions can make the situation worse. Follow these steps to protect your rights and build a stronger defense.
If federal agents approach you, stay calm and respectful, but do not answer their questions. Politely tell them you want to speak with a defense attorney first. You have the right to remain silent under the Fifth Amendment, and anything you say can and will be used by federal prosecutors to build their case.
Speaking without a lawyer present, even casually, can hurt your defense later.
The sooner you speak with a federal criminal defense attorney, the better your chance of building a strong defense and avoiding mistakes. A lawyer with experience in federal criminal cases can help you understand the investigation, guide your decisions, and deal with federal agencies on your behalf.
Perlman Defense Federal Criminal Lawyers offers skilled legal support in Los Angeles and throughout federal districts across the United States.
Save all emails, text messages, documents, and voicemails that may relate to the investigation. If you delete anything, it could be perceived as obstruction of justice, which can lead to new federal criminal charges. Your defense attorney will help decide which records are important and how to present them during the legal process or in federal court.
Do not reach out to others who may be under investigation or connected to the situation, including co-workers or business partners. The federal government may be monitoring phone calls, texts, or other communications. Even innocent conversations can raise red flags or be taken out of context. Let your attorney handle all contact if needed to protect your position.
Never post about the investigation, the agents, or your legal concerns on social media. Avoid sharing any details or even vague comments online. Federal law enforcement and the U.S. Attorney’s Office can use your posts against you in court.
Sharing the wrong thing online can seriously damage your legal defense and complicate your criminal case.

Equally important to knowing what actions to take during a federal criminal investigation is understanding what actions to avoid.
If you talk to anyone other than your lawyer about the investigation, you risk those people being questioned by the federal authorities or subpoenaed by the grand jury, in which case whatever you told them could end up being used against you.
You could even face obstruction of justice or witness tampering charges if the things you said can be twisted around to make it seem like you were attempting to influence the investigation.
If you are considering speaking to someone about the investigation, consult your attorney first.
Speaking with federal law enforcement agents is risky. They may try to get you to make mistakes during the interview. Even small errors could be seen as lies or admissions of guilt. This is why you should have legal help.
If the federal government asks to interview you, your best move is to tell them you have an attorney or are getting one. Do not agree to talk without your lawyer's advice.
Talking to federal prosecutors or agents is like testifying in court. Having your attorney with you can help prevent any misunderstandings, mistakes, or accidental misstatements. This is key to protecting your rights under federal criminal law.
You can take other actions that could result in witness tampering or obstruction of justice charges. Under 18 U.S.C. § 1510,
Whoever willfully endeavors by means of bribery to obstruct, delay, or prevent the communication of information relating to a violation of any criminal statute of the United States by any person to a criminal investigator shall be fined under this title, or imprisoned not more than five years, or both.
If you do talk to the federal authorities or you are subpoenaed to testify before a grand jury, you should always tell the truth. Lying to federal agents is a separate crime under 18 U.S.C. § 1001, and you can be prosecuted for this crime whether you were under oath at the time of the lie or not.
Destroying documents pertaining to a federal investigation is a crime, and you could end up facing additional charges under 18 U.S.C. § 1519 if you alter or destroy documents, records, or other evidence.
If you attempt to delete or modify files on your computer and your computer is confiscated as part of the investigation, the government will likely discover what you did and treat it as evidence of your guilt.
Even if you believe you have done nothing wrong, you can't assume that the government will see things your way. A federal investigation doesn't always turn out the way you would expect.
If you are in any way involved in such an investigation, you should respect the power and authority of the federal government and be aware that just because you are innocent of the crime in question doesn't necessarily mean you are safe from prosecution.
We mentioned earlier that your status in a federal investigation can change rapidly. Just because you are a witness today, seemingly free from suspicion, doesn't mean you can't be considered a subject or even a target tomorrow.
The main goal of a federal investigation is to get to the bottom of a suspected crime, and if the evidence points in your direction, the federal authorities will follow. This is the main reason we encourage anyone involved in a federal investigation to retain legal counsel.
Federal criminal offenses are punished far more severely than comparable state crimes. If your involvement in a federal investigation leads to charges being filed in federal court, you could face devastating potential penalties, possibly including a lengthy prison sentence, considerable fines, and other life-changing consequences.
| Status | What It Means |
|---|---|
| Witness | You may have helpful information, but you're not under suspicion |
| Subject | Your conduct is being reviewed, but you’re not a primary target |
| Target | The government believes you committed a federal crime |

Federal investigations are not quick. These cases can take weeks, months, or even years before charges are filed. The federal government takes its time to build a strong case, which means the investigation process can feel slow and stressful.
Agents may collect evidence, speak with witnesses, and review your financial records or digital communications before deciding to indict. If you suspect you're under a federal criminal investigation, do not wait. Contact a defense attorney right away, even if no formal charges have been filed yet.
1. What Is a Federal Investigation, and How Does It Begin?
A federal investigation starts when a federal agency like the FBI, DEA, or IRS believes a federal law has been broken. It may begin with a tip, a suspicious transaction, or a referral from a state agency.
2. Can I Go to Jail During a Federal Investigation?
You can be arrested if the federal prosecutor believes there is enough evidence to charge you with a crime. But often, you may be investigated for a long time before an arrest occurs. During this period, you should stay silent and hire a federal criminal defense attorney.
3. What Should I Do if I Get a Target Letter?
A target letter means you are likely to be indicted. Do not contact anyone involved in the case. Call a federal defense lawyer immediately. Your lawyer can contact the U.S. Attorney’s Office to learn more and possibly prevent charges.
4. Can My Property Be Taken During a Federal Investigation?
Yes. Agents may execute a search warrant and seize property if they believe it is connected to a crime. Items like phones, computers, or financial documents are often taken. Your lawyer can request the return of items not used as evidence.
5. Will I Have to Go to Trial?
Not always. Many federal criminal cases are resolved through a plea deal or pre-indictment plea agreement. Your attorney will explain your options and help negotiate the best possible result.

If you believe you are under a federal investigation, you need strong legal protection immediately. Perlman Defense Federal Criminal Lawyers has helped clients across Los Angeles and beyond defend themselves against tough federal criminal charges.
Our team knows how to handle federal agencies, including the FBI, DEA, and the Department of Justice. We understand the serious risks involved and the stress that comes with the unknown. We can help you protect your rights and prepare a strong defense.
You don’t have to face this alone. Contact us today for a free consultation and let us help you through this process with skill, confidentiality, and care.


Daniel R. Perlman, the founding attorney at Perlman Defense Federal Criminal Lawyers, leverages his extensive background as a former prosecutor to provide superior defense strategies for clients across federal courtrooms. Earning his Juris Doctor from the Catholic University of America's Columbus School of Law, he first honed his legal skills with the Maryland State’s Attorney’s Office.
This diverse experience enables him to advocate effectively, understanding prosecution tactics intimately, which he expertly counters in defense of his clients. With a profound commitment to justice, Daniel leads his team in tackling complex federal cases, from white-collar crimes to violent offenses, ensuring the highest level of defense through every phase of the criminal process.
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