What to Do If You Are Under Investigation for a Drug Crime in Texas

You do not have to be arrested to need a drug defense attorney.

Sometimes the first warning comes when a detective calls and says, “We just want to ask you a few questions.”

Other times, police appear at your home, agents execute a search warrant, someone you know is arrested, a package is intercepted, or you learn that investigators have been asking questions about you.

If you believe you are under investigation for a Texas drug offense, what you do before charges are filed can matter.

This is not the time to panic, confront other people, destroy evidence, or try to talk your way out of the investigation.

It’s time to understand what may be happening and protect your rights.

I help people facing drug investigations throughout Texas, including cases involving possession, delivery, manufacturing, fentanyl, prescription drugs, vehicle searches, confidential informants, and possible federal charges.

How Do You Know If You Are Under Drug Investigation?

Sometimes law enforcement tells you directly.

Often, the signs are less obvious.

Possible signs can include:

• A detective calls you
• Police ask you to come to the station
• Officers visit your home or workplace
• Police contact friends, relatives, or coworkers
• Someone asks questions about your vehicle
• A package does not arrive and law enforcement contacts you
• Police execute a search warrant
• Your phone or computer is seized
• Someone you know has been arrested
• A confidential informant contacts you
• You learn that police have surveillance footage
• Federal agents contact you
• You receive a subpoena
• Investigators ask about financial transactions
• Police ask you to identify another person
• Someone says investigators are asking about alleged drug sales

None of these signs automatically mean charges will be filed.

They do mean you should take the possibility seriously.

Should You Talk to a Detective Who Calls You?

You do not have to agree to a voluntary interview simply because an investigator asks.

A detective may sound casual or tell you that talking is your opportunity to explain what happened.

Before agreeing to an interview, consider speaking with a lawyer.

The Fifth Amendment protects against compelled self-incrimination. Miranda warnings are specifically required before custodial interrogation, but many investigative interviews occur before a person is formally in custody.

That distinction matters.

Do not assume police must read Miranda warnings before every conversation.

If an interview is voluntary, you can generally decline to participate voluntarily and obtain legal advice first.

What Should You Say If Police Want to Question You?

You do not need to argue.

You can communicate clearly and respectfully that you do not want to answer questions and want to speak with an attorney before deciding whether to participate.

Do not try to give investigators a short explanation first.

A person may accidentally provide evidence about:

• Knowledge of drugs
• Ownership
• Possession
• Travel
• Other suspects
• Drug sources
• Money
• Alleged sales
• Phone numbers
• Locations
• Vehicles

Even an answer that seems innocent may later be compared with surveillance, text messages, witness statements, or other evidence.

What If Police Say You Are Only a Witness?

That description may be accurate.

It may also change as an investigation develops.

A person can begin as a witness and later become a suspect.

If the questions involve conduct that could expose you to criminal liability, consider getting legal advice before answering.

The Fifth Amendment privilege against self-incrimination can apply when answers present a reasonable risk of incrimination, although how and when the privilege must be asserted depends on the circumstances.

Should You Go to the Police Station to “Clear Things Up”?

Not before understanding why investigators want to speak with you.

You may believe the best strategy is to tell your side immediately.

Sometimes an interview instead allows investigators to:

• Lock you into a timeline
• Compare your story with another person’s
• Ask about messages they already possess
• Establish that you knew about a substance
• Establish control of a vehicle or property
• Identify additional evidence
• Obtain admissions you did not realize were important

An attorney can help you evaluate whether an interview is advisable before you walk into one.

Can a Lawyer Contact the Investigator for You?

Yes.

In many situations, an attorney can contact law enforcement or the prosecutor on your behalf.

Depending on the circumstances, this may help determine:

• Which agency is investigating
• Whether charges have been filed
• Whether an arrest warrant exists
• Whether investigators want an interview
• Whether property has been seized
• Whether a surrender can be arranged if a warrant exists
• Whether the matter appears to be state or federal

Law enforcement is not always required to disclose every detail of an ongoing investigation.

Still, having counsel involved can provide a more controlled way to communicate.

Do Not Destroy or Hide Evidence

Learning that you are under investigation can create an urge to get rid of anything that might be misunderstood.

Do not do that.

Texas Penal Code Section 37.09 can make it a criminal offense, under defined circumstances, to alter, destroy, or conceal a record, document, or other thing with intent to impair its availability as evidence in an investigation or official proceeding. The statute can also apply to certain conduct after a person knows an offense has been committed and anticipates a later investigation.

Do not:

• Delete text messages
• Wipe phones
• Destroy documents
• Throw away relevant objects
• Alter records
• Hide property
• Delete social media accounts because of the investigation
• Tell another person to destroy evidence

Preservation is usually the safer course.

Preserve Evidence That May Help You

Not all evidence is harmful.

Your own records may help explain events that investigators have misunderstood.

Preserve things such as:

• Full text conversations
• Emails
• Photographs
• Videos
• Receipts
• Bank records
• Prescription records
• Pharmacy receipts
• Travel records
• GPS or location history
• Employment schedules
• Hotel receipts
• Rental-car records
• Medical records
• Business records
• Names of possible witnesses

Do not edit or alter the materials.

Your attorney can decide what may be useful and when it should be disclosed.

Do Not Contact Other Suspects to Compare Stories

If you learn that a friend, passenger, roommate, alleged buyer, supplier, or coworker has been questioned, you may want to find out what they told police.

Be careful.

Do not try to coordinate statements or tell another person what to say.

That can create additional evidence and potentially additional legal problems.

Instead, tell your attorney who the other people are and why they may matter.

Be Careful With Confidential Informants

Drug investigations frequently use confidential informants.

An informant may be:

• Working to reduce their own criminal exposure
• Receiving money
• Participating in controlled buys
• Recording conversations
• Introducing an undercover officer
• Sending monitored messages
• Providing information for a search warrant

If someone suddenly contacts you about drugs, money, or a transaction while you believe an investigation is underway, do not assume the conversation is private.

Do not threaten, confront, or retaliate against someone you believe may be cooperating with police.

What If Police Come to Your House and Ask to Search?

A request for consent is not the same thing as a search warrant.

If officers ask for voluntary consent, you do not have to volunteer consent simply because they request it.

You can clearly state that you do not consent to a search.

Do not physically interfere with officers.

If officers have a warrant, arguing or attempting to block execution of the warrant is generally not the appropriate way to challenge it.

The warrant and search can later be reviewed for legal issues involving:

• Probable cause
• The address
• Items authorized to be seized
• Scope of the search
• Informant information
• Staleness
• False or misleading information
• How officers executed the warrant

What Should You Do If Police Execute a Search Warrant?

Stay calm and do not physically resist.

If practical:

• Ask to see the warrant
• Note which agency is present
• Note what property officers take
• Preserve any paperwork officers leave
• Do not volunteer explanations
• Do not sign documents you do not understand merely because you feel pressured
• Contact an attorney as soon as practical

The fact that a judge signed a warrant does not necessarily mean every aspect of the search is beyond legal challenge.

What If Police Take Your Phone?

Phones can become extremely important evidence in drug investigations.

Investigators may look for:

• Text messages
• Photos
• Contacts
• Location history
• Payment applications
• Social media
• Call logs
• Search history

The Supreme Court has generally required a warrant to search the digital contents of a cell phone seized incident to arrest. Other legal circumstances can apply, so the exact facts matter.

Do not remotely wipe a seized device.

Preserve other related devices and records unless your lawyer advises otherwise.

What If an Investigation Involves a Package?

Package investigations may involve:

• U.S. Mail
• FedEx
• UPS
• Commercial couriers
• International shipments

Law enforcement may attempt to identify:

• The sender
• The intended recipient
• Who controlled the delivery address
• Who accepted the package
• Messages discussing the shipment
• Payment records
• Whether investigators conducted a controlled delivery

Do not assume that a name or address on a package automatically proves knowing possession.

Who knew what was inside may become a critical question.

What Is a Controlled Delivery?

In some investigations, officers intercept suspected contraband and then allow or arrange delivery while conducting surveillance.

Investigators may watch:

• Who accepts the package
• Who opens it
• Who moves it
• Who communicates about it
• Where it is taken
• Whether another person arrives

A controlled delivery can become part of a possession, delivery, conspiracy, or federal investigation.

The exact conduct and evidence should be reviewed carefully.

What If Police Are Investigating Your Vehicle?

Vehicle evidence may involve:

• License plate reader records
• Surveillance
• GPS information
• Traffic stops
• Rental records
• Passenger statements
• Hidden compartments
• Controlled buys
• Drugs discovered during a search

Vehicle ownership alone does not necessarily establish knowledge of everything found inside the vehicle.

The defense may need to examine who used the vehicle and where evidence was actually located.

What If the Investigation Is Federal?

Federal investigations can look different from ordinary local drug cases.

You may be contacted by:

• DEA
• FBI
• Homeland Security Investigations
• U.S. Postal Inspection Service
• A federal task force
• Local officers working with federal agents

Federal investigations may involve conspiracy allegations, larger quantities, multiple defendants, wiretaps, cooperating witnesses, financial evidence, interstate activity, or alleged trafficking.

Do not assume that federal agents are contacting you only because they need harmless background information.

Consider obtaining legal advice before agreeing to an interview.

What If You Receive a Subpoena?

Do not ignore a subpoena or other court process.

A subpoena can create legal obligations, and the appropriate response depends on what it requires and what type of proceeding is involved.

If a subpoena requests testimony, records, phone information, business records, or other material that could affect you, speak with an attorney promptly.

Do not destroy requested records.

Can You Be Arrested Without Warning During an Investigation?

Yes.

Investigators are not generally required to warn a suspect days in advance that they intend to seek charges or make an arrest.

A person may learn about the case when:

• Police arrive with an arrest warrant
• Officers make a traffic stop
• Agents execute a search warrant
• A grand jury returns an indictment
• Someone else is arrested
• The person voluntarily meets with investigators and is arrested

If you believe an arrest may be coming, an attorney may sometimes be able to communicate with law enforcement about how the process will occur.

There is no guarantee that police will agree to a voluntary surrender arrangement.

Can a Lawyer Stop Charges From Being Filed?

No lawyer can promise that.

In some investigations, there may be an opportunity to provide prosecutors with information, identify mistaken assumptions, preserve evidence, or address legal issues before a charging decision is final.

In other cases, prosecutors may proceed regardless.

Pre-charge representation is about protecting your rights and making informed decisions, not guaranteeing that charges will disappear.

Why Acting Early Can Matter

Once an arrest occurs, some evidence may be harder to find.

Early defense work may help preserve:

• Surveillance video
• Business camera footage
• Vehicle data
• Digital communications
• Witness memories
• Receipts
• Location records
• Employment information

Some private surveillance systems overwrite video quickly.

Witnesses forget details.

Phones are replaced.

Records become harder to locate.

If potentially helpful evidence exists, identifying it early can matter.

Do Not Post About the Investigation Online

Avoid using social media to defend yourself publicly.

Do not post:

• Your theory about who reported you
• Photos of evidence
• Messages attacking investigators
• Details of an alleged transaction
• Statements blaming another person
• Screenshots of private conversations
• Threats or insults toward possible witnesses

Investigators can potentially discover public posts and may seek access to other digital information through lawful process.

Your criminal case is not improved by winning an argument on social media.

What Can a Texas Drug Defense Attorney Do Before an Arrest?

Every investigation is different, but early representation may include:

• Communicating with investigators
• Determining which agency is involved
• Advising whether to participate in an interview
• Reviewing a search warrant
• Preserving favorable evidence
• Identifying witnesses
• Evaluating potential charges
• Examining possession issues
• Evaluating search and seizure questions
• Preparing for a possible arrest
• Advising about subpoenas
• Evaluating possible federal exposure
• Helping prevent unnecessary statements

The goal is not to interfere with a lawful investigation.

The goal is to protect your rights while understanding the risk.

How I Help People Under Drug Investigation Throughout Texas

Being investigated can be especially stressful because you may not even know what charge police are considering.

I help make the situation clearer.

Tell Me What Has Happened

We discuss law enforcement contact, searches, witnesses, alleged drugs, vehicles, packages, phones, and anything you know about the investigation.

Understand the Risk

I help identify possible charges, agencies involved, evidence issues, search questions, and whether state or federal law may apply.

Build a Path Forward

Then we determine what steps make sense, including communication with investigators, evidence preservation, and preparation for what may happen next.

I help people facing drug investigations throughout Texas.

Frequently Asked Questions About Texas Drug Investigations

Do I have to meet with a detective who asks me to come to the station?

Not merely because the investigator asks you to participate in a voluntary interview. Before agreeing, you can obtain legal advice about whether participating is in your interest.

Should I answer questions if police say I am not under arrest?

Be careful. Miranda rules focus on custodial interrogation, so the fact that police have not arrested you does not necessarily mean anything you voluntarily say is protected from later use.

Can I tell police they cannot search my home?

If officers are asking for voluntary consent, you can decline to give consent. If they have a valid warrant or another lawful basis, different rules apply. Do not physically interfere with a search.

Should I delete messages if I think police may take my phone?

No. Altering, destroying, or concealing evidence with the required intent can create serious additional legal problems. Preserve the information and speak with an attorney.

Can an attorney help before I have been charged?

Yes. You do not need to wait for an arrest to consult an attorney. Counsel may be able to advise you about interviews, searches, evidence preservation, possible charges, and communication with investigators.

Speak With a Texas Drug Defense Attorney Before an Arrest

You do not have to wait until police put you in handcuffs to begin protecting yourself.

If detectives, narcotics officers, federal agents, or other investigators are asking questions about you, your vehicle, your home, a package, or an alleged drug transaction, getting legal guidance early can help you avoid decisions that cannot easily be undone.

I represent people facing drug investigations throughout Texas.

Legal References

United States Constitution, Fifth Amendment.

Texas Code of Criminal Procedure Articles 1.05 and 1.051.

Texas Penal Code Section 37.09.

Miranda v. Arizona, 384 U.S. 436.

Riley v. California, 573 U.S. 373.

Disclaimer

This page provides general educational information and is not legal advice. Investigations vary widely, and the rights, risks, and appropriate response depend on the facts and whether state or federal authorities are involved. Texas and federal law can change. No attorney can guarantee that charges will not be filed, that an arrest will be avoided, or that a particular case result will occur. Visiting this website or contacting the firm does not by itself create an attorney-client relationship.

Last reviewed: August 31, 2026