
Strategic defense for drug possession, distribution, trafficking,
and related charges throughout Galveston & Harris Counties.
Drug crime charges are among the most aggressively prosecuted criminal offenses in Texas. Whether you’re accused of simple possession, drug trafficking, manufacturing, or another drug-related offense, a conviction can carry serious consequences that affect your freedom, your finances, and your future. Fortunately, an arrest is not the same as a conviction. Every case deserves a careful review of the facts, the evidence, and the actions taken by law enforcement.
At Mark Diaz & Associates, we represent clients facing misdemeanor and felony drug charges throughout Galveston County and the surrounding area, including Harris County. Led by attorney Mark Diaz, who has focused exclusively on criminal defense for nearly 30 years, our firm provides strategic, personalized representation designed to protect your rights and pursue the best possible outcome.
Drug investigations often begin long before an arrest is made. Law enforcement may rely on surveillance, confidential informants, search warrants, controlled purchases, or electronic communications while building a case. Even when prosecutors believe they have strong evidence, that doesn’t necessarily mean it was lawfully obtained or that it will withstand scrutiny in court.
Our firm represents clients facing a variety of drug-related charges, including:
Every case is different, which is why we carefully examine the evidence, the investigation, and the circumstances surrounding your arrest before developing a defense strategy tailored to your situation.
Many successful drug crime defenses begin by examining how the investigation was conducted. Issues involving search warrants, traffic stops, probable cause, witness credibility, and the seizure of evidence can all play a critical role in the outcome of a case. A thorough review of these issues may reveal weaknesses in the prosecution’s case or opportunities to challenge key evidence.
At Mark Diaz & Associates, criminal defense is our sole focus. For nearly three decades, attorney Mark Diaz has represented individuals facing serious criminal charges throughout Texas. Whether you’re charged with a misdemeanor or felony drug offense, our firm is committed to providing the personalized attention, thorough preparation, and aggressive advocacy your case deserves.
If you’ve been arrested for a drug crime or believe you’re under investigation, don’t wait to seek experienced legal guidance. Contact Mark Diaz & Associates today to discuss your situation, understand your legal options, and begin building your defense.
Call 409-515-6170 today to schedule your free consultation. Se habla español.

Mark Diaz and Associates were an amazing team to work with. Highly recommend them for anyone interested in seeking help. Everyone was very knowledgeable and exceedingly helpful throughout my time working with them. As a first timer who needed assistance they made the judiciary process quite simple. I am very privileged to have had the experience of working with such a wonderful group. If you need a team with experience, knowledge and passion these are the people for you.
This entire team was absolutely wonderful to work with. Where other attorney teams refused to listen, the Mark Diaz team stepped up. Not only did they take on my case, but they went out and fought for me. I simply shared with them the facts of the events that took place, and Ms. Jessica Ebbs pushed us to a Jury Trial and had the case dismissed entirely. I am eternally grateful. I highly recommend this team to anyone faced with a wrongful suit, or who may be facing consequences unequal to the facts of the matter. They truly care, and they truly put in the due diligence necessary to defend their clients.
Drug charges can carry serious penalties that affect your future long after your case is resolved. Mark Diaz & Associates provides strategic defense for drug-related offenses throughout Galveston and Harris Counties, helping clients navigate complex criminal charges with personalized legal representation.
Protecting clients charged with driving while intoxicated through strategic legal representation focused on protecting their rights and future.
Defending clients charged with drug possession, distribution, trafficking, and other drug-related offenses.
Strategic defense for individuals accused of domestic violence and other family violence-related criminal offenses.
Experienced defense for a wide range of misdemeanor and felony charges, including theft crimes, violent crimes, federal offenses, and more.