8. (1) The Government may establish an Agency for the purposes of investigation into crimes specified in section 3; and any officer belonging to the Agency shall have the right to assist the prosecution during the trial.
(2) Any person appointed as a Prosecutor is competent to act as an Investigation Officer and the provisions relating to investigation shall apply to such Prosecutor.
(3) Any Investigation Officer making an investigation under this Act may, by order in writing, require the attendance before himself of any person who appears to be acquainted with the circumstances of the case; and such person shall attend as so required.
(4) Any Investigation Officer making an investigation under this Act may examine orally any person who appears to be acquainted with the facts and circumstances of the case.
(5) Such person shall be bound to answer all questions put to him by an Investigation Officer and shall not be excused from answering any question on the ground that the answer to such question will criminate, or may tend directly or indirectly to criminate, such person:
Provided that no such answer, which a person shall be compelled to give, shall subject him to any arrest or prosecution, or be proved against him in any criminal proceeding.
(6) The Investigation Officer may reduce into writing any statement made to him in the course of examination under this section.
(7) Any person who fails to appear before an Investigation Officer for the purpose of examination or refuses to answer the questions put to him by such Investigation Officer shall be punished with simple imprisonment which may extend to six months, or with fine which may extend to Taka two thousand, or with both.
(8) Any Magistrate of the first class may take cognizance of an offence punishable under sub-section (7) upon a complaint in writing by an Investigation Officer.
(9) Any investigation done into the crimes specified in section 3 shall be deemed to have been done under the provisions of this Act.