.png)
Uncompromising legal expertise, veteran criminal investigator, intelligence practitioner, and strategic security operations experience derived from decades of government service, specializing in complex transnational cases.
Atty. Ricardo A. Diaz is the Managing Partner of Rick Diaz & Associates Law Firm & Quantico Consultancy. He 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 and executive legal leadership, he is widely recognized for his direction in criminal defense, 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.
Combining courtroom advocacy with senior command experience from the National Bureau of Investigation and FBI-trained investigative methodologies to deliver decisive legal and tactical counsel.
Comprehensive representation in high-stakes criminal litigation, DOJ preliminary investigations, and complex evidentiary proceedings backed by veteran bureau command experience.
Executive-level security architecture, institutional vulnerability audits, and strategic risk advisory designed to safeguard critical enterprises and national interests.
Intelligence-led methodologies to identify, assess, and neutralize asymmetric threats, drawing on former leadership of the NBI Counter-Terrorism and Criminal Intelligence Divisions.
Specialized legal counsel on international law enforcement cooperation, cross-border mutual legal assistance, extradition proceedings, and INTERPOL Notice representations.
Targeted investigative strategies and legal interventions addressing syndicated crime, illicit trafficking networks, and multi-jurisdictional regulatory offenses.
Forensic asset tracing, corporate fraud investigations, anti-money laundering (AMLC) compliance, and defense against complex economic and regulatory infractions.
Decisive executive counsel during high-profile controversies, congressional inquiries, and sensitive media exposure, informed by tenure as Official NBI Spokesperson.
Retained general counsel for corporations, executives, and public officials navigating complex judicial, administrative, and regulatory frameworks in the Philippines.
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. He is also active in the FBI National Academy Asia Pacific Chapter and serves as the Chairman of the Philippine Group.
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. He is also an instructor at the NBI National Academy.
As Managing Partner of Rick Diaz & Associates Law Firm & Quantico Consultancy, Atty. Diaz steers the firm's litigation defense, strategic advisory, and transnational casework. Concurrently, he serves as the President of the NBI Retirees and Ex-Employees Association, Inc. (NBI-REXEAI), advocating for professionalism, institutional integrity, and the advancement of the Philippine criminal justice system.
“Recognized for his integrity, leadership, and dedication to public service, Managing Partner 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.”
Heading the firm's immigration division, Rico Pedrealba serves as Chief Immigration Consultancy, bringing over two decades of senior operational and supervisory experience within the Philippine Bureau of Immigration (BI).
Throughout his distinguished career at the Bureau of Immigration—including long-standing supervisory roles at Ninoy Aquino International Airport (NAIA)—Mr. Pedrealba has specialized in frontline border control, high-profile Immigration Lookout Bulletin Orders (ILBO), offloading mitigations, and complex travel clearances under the Philippine Immigration Act (Commonwealth Act No. 613).
In his current executive role at the firm, Mr. Pedrealba collaborates directly with Managing Partner Atty. Ricardo A. Diaz to deliver strategic, bulletproof immigration solutions—encompassing corporate expat mobility, alien registration compliance, visa processing, deportation defense, and travel clearance enforcement.
Assisting Managing Partner Atty. Ricardo A. Diaz, Dr. Patrick Dela Cruz serves as the firm's Senior Paralegal, Chief Assistant Immigration Adviser, and Executive Legal Assistant, specializing in legal research, consular affairs, document authentication, and executive support operations.
With extensive public service experience spanning intelligence operations, diplomatic liaison, and international consular management, Dr. Patrick oversees legal administration, embassy coordination, and document authentication protocols for the firm.
Drawing on many years of experience working alongside NBI investigators, Dr. Patrick provides essential support in coordinating with various government agencies and assisting lawyers with investigative and administrative matters.
He has extensive experience in conducting investigations, verification, and due diligence, always emphasizing accuracy, efficiency, and professionalism.
He continues to maintain close working relationships with NBI investigators, enabling smooth coordination, information verification, and communication with relevant agencies when handling various legal matters.
“Dr. Patrick is committed to carrying out his work with integrity, professionalism, and full compliance with applicable laws and regulations, providing reliable and trustworthy support to clients and partners.”
Consult with Rick Diaz & Associates Law Firm Quantico Consultancy on complex legal defenses, corporate intelligence, or national security planning.