Licensed Professional Investigations - CA. PI License #28059                    


Investigations • Research • Consulting

Marc A. Garza, P.I.

Agency Owner 

Marc A. Garza is a licensed private investigator and the agency owner of GRI Investigations. He is a retired police sergeant with over 20 years of service in San Diego County. He worked a variety of assignments throughout his law enforcement career including positions in Patrol, Field Training (FTO), Investigations, Firearms Training, SWAT and Supervision. His agency focuses on complex investigations for private clients, law firms, corporate legal counsel and insurance companies. He has assisted legal counsel with investigations in numerous family law, civil litigation and felony criminal defense cases. In addition to conducting comprehensive investigations, he has testified in both civil and criminal cases. His main goal is to build long-term business relationships with his clients by taking a collaborative, transparent approach to all investigations. Marc has become the "go-to" investigator in the private sector for numerous clients who rely on his expertise, efficiency and experience in dealing with  sensitive investigations. His agency is licensed and insured by the State of California under PI License #28059.