Section 21
SEC. 21. As Head of the Office of Special Prosecutors, the Solicitor-General may call upon any office of the Commonwealth Government, make use of the facilities thereof, and otherwise secure its cooperation, which shall be fully given by the office concerned. He or any of the Special Prosecutors shall have authority to administer oath in matters of official business and to conduct investigations by taking oral and documentary evidence, and for this purpose may, by subpoena or subpoena duces tecum, summon witnesses to appear and testify under oath before him, and bring books, documents or other things under their control, and the attendance or evidence of an absent or recalcitrant witness may be enforced by application before the People's Court, or before any inferior or superior court within the jurisdiction of which the witness or evidence may be found.