The Chief, Philippine National Police commands, supervises and controls all elements of the police. He issues form time to time such detailed instructions regarding personnel, funds, records, property, correspondence, intelligence, operations, training and such other matters as may be necessary to effectively carry out the functions of the organization. He prescribes, subject to the approval of NAPOLCOM, the table of organization and equipment, functions, duties and powers of various staff, services, installations and other units of the PNP. The Chief, PNP or the subordinate official he authorizes has the power to issue subpoena and subpoena duces tecum in connection with the investigation of cases.Offices under the Chief PNP