Judgement Briefs

Criminal Procedure Code

Mahabir Singh v. State of Haryana

(2001) 7 SCC 148

Citation
(2001) 7 SCC 148
Court
Supreme Court of India
Date
21 August 2001
Bench
K.T. Thomas and R.P. Sethi JJ.

Facts

  • Mahabir Singh was prosecuted in connection with the fatal stabbing of a young man.
  • During the proceedings, controversy arose regarding the statements and conduct of prosecution witnesses.
  • The defence relied upon entries in the police case diary to challenge parts of the prosecution version.
  • The High Court also referred to the case diary while assessing the evidence.
  • The Supreme Court had to consider the lawful use of a police diary under Section 172 CrPC.
  • The question was important because the diary had not itself been formally proved as substantive evidence during the trial. ( )

Issue

  • Whether a court may use entries in the police case diary as evidence of facts stated in the diary.
  • To what extent the accused may inspect or rely upon the diary.

Rule

  • Section 172 CrPC requires an investigating officer to maintain a day-to-day diary recording:
  • the time information reached the officer;
  • when investigation began and ended;
  • places visited; and
  • circumstances ascertained.
  • The criminal court may call for the diary and use it to aid the inquiry or trial.
  • The diary is not substantive evidence.
  • It cannot independently prove:
  • that an event occurred;
  • that a witness made a particular statement;
  • or that the accused is guilty or innocent.
  • The accused has no general right to inspect the diary merely because the court calls for it.
  • Limited access arises where:
  • the police officer uses the diary to refresh memory; or
  • the court uses it to contradict the police officer.
  • In that situation, the relevant rules governing contradiction become applicable.
  • Case-diary entries cannot ordinarily be used to contradict a non-police witness.
  • The corresponding provision is Section 192 BNSS.

Application

  • The Supreme Court distinguished between using the diary as an aid and treating it as proof.
  • A judge may examine the diary to:
  • understand the sequence of investigation;
  • identify matters requiring clarification;
  • frame questions;
  • or verify whether the investigation followed a particular course.
  • But the judge must ultimately decide the case on evidence legally introduced in court.
  • If the diary states that a witness was examined on one date, that entry cannot by itself prove what the witness said or establish that the witness is lying.
  • Such a witness must be confronted through legally admissible material.
  • Similarly, an accused cannot select favourable portions of the diary and use them as defence evidence without satisfying the statutory conditions.
  • The restrictions exist for important reasons:
  • the diary may contain unverified information;
  • sources may require protection;
  • investigative theories may change;
  • and premature disclosure may endanger witnesses or future investigation.
  • At the same time, the diary is not immune from every use.
  • If the investigating officer relies on it to refresh recollection, fairness permits the defence to examine the relevant part.
  • If the court uses it to contradict that officer, the statutory rules of contradiction must be followed.
  • The High Court therefore could not base conclusions about factual innocence or witness reliability directly on unproved diary entries.
  • The Supreme Court required the evidence to be evaluated independently of any prohibited use of the case diary.

Conclusion

  • The Supreme Court reaffirmed that a police diary may assist the court but cannot be used directly or indirectly as substantive evidence.
  • The accused does not have an unrestricted right to inspect or rely on it.
  • Any use for refreshing memory or contradicting the investigating officer must follow the statutory safeguards.
  • The case is a leading authority on the limited procedural role of case diaries in criminal trials. ( )