Atty. Ricardo A. DiazSenior Legal & Security Advisor
Uncompromising legal expertise, veteran criminal intelligence, and strategic security operations derived from decades of premier public service, specializing in complex criminal cases.

Distinguished Public Service
Atty. Ricardo A. Diaz is a distinguished Filipino lawyer, veteran investigator, and former senior executive of the National Bureau of Investigation (NBI) under the Department of Justice of the Republic of the Philippines.
With decades of dedicated public service, he is widely recognized for his leadership in criminal investigations, intelligence operations, and national law enforcement. Throughout his distinguished NBI career, Atty. Diaz held numerous executive positions, overseeing major investigative operations and leading multidisciplinary teams responsible for combating organized crime, terrorism, human trafficking, financial crimes, and other high-profile criminal cases. He has developed a deep specialty in handling critical criminal cases and judicial strategy.
His leadership extended across several strategic regional offices, as well as national intelligence, crisis management, and international law enforcement coordination.
Credentials
Executive Leadership
Regional Director Assignments
National Intelligence & Bureau Leadership
Areas of Professional Expertise
Criminal Cases & Investigation
Deep strategic counsel, trial preparation, and advanced investigation methods specializing in high-profile criminal cases.
National Security
Tactical advice and strategic security planning to manage risks and protect national interests.
Counter-Terrorism
Intelligence intelligence-led approaches to preempt threat networks and secure infrastructures.
INTERPOL Coordination
Liaison and strategic alignment with international law enforcement networks.
Organized Crime
Strategies for dismantling transnational crime groups and countering human trafficking networks.
Financial & Economic Crime
Tracing capital, auditing, and investigating white-collar and corporate financial infractions.
Crisis Management
Executive handling of national emergencies, media strategy, and strategic public relations.
Strategic Law
General legal counsel specializing in defense, risk compliance, and judicial affairs.
FBI Professional Development
Atty. Diaz has participated in specialized professional training with the Federal Bureau of Investigation (FBI) of the United States. This engagement strengthened his expertise in advanced investigative methodologies, intelligence analysis, tactical operations, and international law enforcement cooperation.
Broadcasting & Journalism
Before entering public service, Atty. Diaz built a successful career in journalism and broadcasting, serving as a newspaper reporter and radio broadcaster. His rich communications background later contributed significantly to his appointment as the NBI's Official Spokesperson, representing the Bureau in matters of national and international importance.
Advocacy & Association Leadership
Today, Atty. Ricardo A. Diaz serves as the President of the NBI Retirees and Ex-Employees Association, Inc. (NBI-REXEAI). In this capacity, he represents retired NBI officials and former employees while continuing to advocate for professionalism, institutional integrity, and the advancement of the Philippine criminal justice system.
“Recognized for his integrity, leadership, and dedication to public service, Atty. Ricardo Diaz has made significant contributions to the advancement of criminal investigation and law enforcement in the Philippines. His distinguished career reflects a lifelong commitment to justice, national security, and the rule of law.”
Document Legalization & Authentication
Assisting Atty. Ricardo A. Diaz, Dr. Patrick Dela Cruz Perez serves as the firm's Lead Paralegal and Assistant Lawyer, specializing in international Document Legalization, Consular Authentication, and Apostille certification services.
In international law, Document Legalization is the official process of authenticating a signature, seal, or stamp on a legal document so that its validity is recognized by foreign government offices, courts, and financial institutions. Whether you are expanding your business globally, executing foreign transactions, or submitting legal evidence abroad, we streamline the consular pipeline.
Dr. Perez and his specialized consular affairs team navigate complex bureaucratic pathways across embassies, departments of foreign affairs, and notary boards to deliver certified and fully legalized documents in compliance with both the Hague Apostille Convention and country-specific consular requirements.
Paralegal & Assistant Lawyer
Request a Consultation
Consult with Rick Diaz & Associate Law Firm Quantico Consultancy on complex legal defenses, corporate intelligence, or national security planning.