• Direct and supervise the Investigation of crimes and other offenses in violation of the laws of the Philippines. 
  • Supervise investigation of and monitor complaints pertaining to police matters and cases referred by other government/private agencies, organizations and/or individual persons. 
  • Conduct studies, researches and formulate plans and policies to enhance the investigation capabilities of the PNP to promote effectively and efficiently. 
  • Maintain close supervisory direction of crime laboratories and other investigative support units. 
  • Supervise the National Crime Information System in coordination with the ITMS & the Directorate for Intelligence. 
  • Maintain, collect and process Crime Statistics for ready reference. 
  • Maintain active liaisoning with foreign counterparts on matters of mutual interest.
  • Propose and support enactment of laws for the successful investigation and prosecution of crimes; and 
  • Perform such other functions as may be directed by the C, PNP.