Marc A. Garza

Founder & CEO of GRI Investigations, Inc.

Background and Investigative Experience: 

Marc is a seasoned private investigator with a comprehensive background in law enforcement, consulting and investigations spanning over 25 years. In 2019, he retired at the rank of police sergeant, having served in various critical roles in criminal investigations, field training (FTO), SWAT, firearms training, and police supervision. His extensive experience in these diverse assignments has provided him with the skills and insight necessary to handle complex investigations with precision and professionalism.

Throughout his career, Marc has been called upon to testify in state and federal courts, providing expert testimony in civil, family, and criminal defense cases. His deep knowledge of legal procedures and commitment to thorough investigative work make him an invaluable asset to legal teams and clients alike. Marc's unwavering dedication to uncovering the truth and his law enforcement expertise ensure that every case he takes on is handled with integrity and skill.  

Marc's passion for justice extends beyond traditional investigations, as he is deeply committed to innocence issues and post-conviction work. As part of his role at The Innocence Center in San Diego, he dedicates his time and expertise to rectifying wrongful convictions. His meticulous approach to reviewing evidence and uncovering overlooked details aims to correct the injustices that have affected the lives of innocent individuals. Marc’s ultimate goal is to help exonerate the wrongfully convicted, bringing truth to light and ensuring that justice is truly served.  

Investigative Expertise:

• Background Investigations; Due Diligence Investigations; Person Locate Investigations
• Civil Litigation Investigations (Corporate Fraud, Personal Injury, Traffic Collisions)
• Family Law Investigations (Divorce, Child Welfare, Cohabitation, Court Order Violations)
• Criminal Defense Investigations  (Homicide, Gang Related Crimes, ADW w Firearms)
• Tactical Firearms; CA POST Certified Firearms Instructor in the AR-15, Shotgun & Handgun
• Technical Surveillance Counter Measures ("TSCM Bug Sweeps") 

Professional Affiliations:

• Member: California Association of Licensed Investigators ("CALI")
• Member: California Defense Investigators Association ("CDIA")
• Member: San Diego County Bar Association ("SDCBA")
• Staff Investigator at The Innocence Center ("TIC")