Section 171 of CRPC "Complainant and witnesses not to be
required to accompany police officer and not to be subjected to
restraint"
No complainant or witness on his way to any Court shall be
required to accompany a police officer, or shall be subjected to
unnecessary restraint or inconvenience, or required to give any
security for his appearance other than his own bond:
Provided that, if any complainant or witness refuses to attend
or to execute a bond as directed in section 170, the officer in
charge of the police station may forward him in custody to the
Magistrate, who may detain him in custody until he executes such
bond, or until the hearing of the case is completed.
Section 172 of CRPC "Diary of proceedings in
investigation"
(1) Every police officer making an
investigation under this Chapter shall day by day enter his proceedings in
the investigation in a diary, setting forth the time at which the
information reached him, the time at which he began and closed his
investigation, the place or places visited by him, and a statement of the
circumstances ascertained through his investigation.
1[(1A) The statements of witnesses recorded during the course of investigation under section 161 shall be inserted in the case diary.
(1B) The diary referred to in sub-section (1) shall be a volume and duly paginated.]
(2) Any Criminal Court may send for the police diaries of a case under inquiry or trial in such Court, and may use such diaries, not as evidence in the case, but to aid it in such inquiry or trial.
(3) Neither the accused nor his agents shall be entitled to call for such diaries, nor shall he or they be entitled to see them merely because they are referred to by the Court; but, if they are used by the police officer who made them to refresh his memory, or if the Court uses them for the purpose of contradicting such police officer, the provisions of section 161 or section 145, as the case may be, of the Indian Evidence Act, 1872 (1 of 1872), shall apply.
-----------------------
1. Ins. by Act 5 of 2009, s.15 (w.e.f. 31-12-2009)