- NAPOLCOM Memorandum Circular No. 2020-006
- MC No. 2018-027 Guidelines and Procedures in the Management and Supervision of All Custodial Facilities and Persons Under PNP Custody
- MC 2016-033 Guidelines on the Recording, Monitoring and Investigation of Missing and Found Persons, and Identification of Human Remains
- MC 2014-016 e-Subpoena System
- MC 2014-009 Crime Incident Recording System
- MC 2013-003 Professionalizing the Philippine National Police Field Investigation (certification)
- MC 2013-001 Guidelines for the Detection and Investigation of Investment Fraud
- MC 2008-0801-003 Uniform Guidelines in the Service of Subpoena and Other Legal Processes Issued by the Courts, Tribunals, Administrative and Quasi-Judicial Bodies
- MC 2005-010 Standardized Functional Set up for PNP Investigation and Detective Management Offices
- MC 2005-009 Institutionalizing a System of Investigators & Detectives Eligibility Accreditation (idea) through the creation of an Investigators & Detectives Eligibility Accreditation Board
