Essential Techniques for Witness Examination in Criminal Investigations

When a crime is reported, the investigation that follows isn’t just about collecting physical evidence at the scene. Much of what determines whether a case succeeds or fails in court comes down to witnesses – who they are, how they are summoned, what they say, and how meticulously those statements are recorded. Witness examination by the police is one of the most consequential steps in the entire criminal justice process, yet it is also one of the most procedurally regulated. Understanding how this works gives you a clearer picture of what happens between the filing of an FIR and the framing of a charge.

The legal foundation: sections 160 and 161 CrPC (now BNSS) 🔗

India’s criminal procedure has historically been governed by the Code of Criminal Procedure, 1973 (CrPC), which has now been replaced by the Bharatiya Nagarik Suraksha Sanhita, 2023 (BNSS). The core provisions on witness examination – formerly Sections 160 and 161 of CrPC – are now mirrored in Sections 179 and 180 of the BNSS, with the same procedural intent but with greater emphasis on accountability and technology.

Together, these two provisions form a two-step process: first, summoning witnesses; and second, examining them and recording their statements. Neither step is optional or informal – both are governed by strict procedural rules that courts have repeatedly reinforced over the years.

Step one: summoning witnesses (section 160 CrPC / section 179 BNSS) 🔗

Before a police officer can examine a witness, that witness must first be formally called in. Section 160 of CrPC empowers an investigating officer to issue a written order requiring any person who appears to be acquainted with the facts of the case to appear before them. The key word here is written – a casual phone call asking someone to “come to the station” does not meet the legal standard. The Madras High Court has specifically ruled that summons must be in writing, specifying a date and time, and that any informal verbal requests are not compliant with the law.

The summons must contain the investigating officer’s name, designation, and address, along with the FIR number and the offence being investigated. There is also a jurisdictional limit – the person summoned must be within the limits of the investigating officer’s own police station or an adjoining station. A person living in a different city cannot simply be summoned without proper legal authority.

Special protections for vulnerable groups 🔗

The law specifically protects certain categories of people. Section 160 CrPC provides that no male under 15 years of age or above 65 years, no woman, and no person with a mental or physical disability can be compelled to attend at any place other than their residence. The investigating officer must go to them – not the other way around. Failure to comply with a valid summons is punishable under Section 174 of the Indian Penal Code with up to one month’s simple imprisonment or a fine.

Step two: examining witnesses and recording statements (section 161 CrPC / section 180 BNSS) 🔗

Once a witness appears, the actual examination begins under Section 161 CrPC (now Section 180 BNSS). Any police officer conducting the investigation – or an officer of a rank prescribed by the State Government – may orally examine any person believed to have knowledge of the case. The person being examined is legally bound to answer all questions truthfully. However, there is a critical exception: no one is required to answer a question whose answer would tend to expose them to a criminal charge, penalty, or forfeiture. This directly reflects the constitutional protection against self-incrimination under Article 20(3) of the Indian Constitution.

How statements are recorded 🔗

The police officer may note the statement in writing, and if they do, they must prepare a separate and true record of each person’s statement. This means the statements of different witnesses cannot be clubbed together – each must be documented individually. As per the procedural requirement, all statements should be recorded in the direct form of speech, meaning the record should read as a statement made by the witness themselves.

A significant update introduced by the BNSS is that statements can now also be captured through audio-video electronic means. This modernisation aims to bring greater transparency to the process, reduce the chances of the contents being disputed later, and create a more reliable record. In sensitive cases – particularly those involving sexual offences under Sections 64 to 78 of the Bharatiya Nyaya Sanhita, 2023 – the statement of a woman must be recorded by a woman police officer or another woman official, ensuring dignity and minimising trauma.

The prohibition on coercion 🔗

One of the most important safeguards is that the investigating officer cannot use threats, inducements, or coercion while recording a witness’s statement. Courts across India have consistently held that statements obtained through pressure or promise are unreliable and taint the investigation. The voluntariness of the statement is not just an ethical requirement – it is a legal one that directly affects the evidentiary value of the investigation as a whole.

Prompt recording also matters. In Balakrishna Swain v. State of Orissa (1971), the Supreme Court flagged an unexplained delay of 10 days in recording witness statements and observed that when delay is unexplained, the truthfulness of the evidence becomes questionable. Investigating officers are therefore expected to record witness statements without unnecessary delay.

The crucial question of evidentiary value 🔗

Here is something that surprises many students: statements recorded by the police under Section 161 CrPC (or Section 180 BNSS) are not substantive evidence in court. They are not made under oath, and they are not subject to cross-examination at the time of recording. This means a Section 161 statement, by itself, cannot be used to prove a fact during trial.

So what is the purpose of recording them at all? These statements serve a critical investigative function – they help police reconstruct events, identify suspects, build the charge sheet, and understand what witnesses know. Their use in court is limited but legally significant: they can be used to contradict a witness if their court testimony differs from what they told the police, under Section 145 of the Indian Evidence Act (now BSA). Additionally, if a prosecution witness turns hostile, the Public Prosecutor – with the court’s permission – can use the earlier statement to expose inconsistencies in the witness’s current testimony.

In Sewaki v. State of Himachal Pradesh (1981), the Supreme Court confirmed that Section 161 statements are neither made on oath nor tested through cross-examination, and therefore they cannot be treated as evidence of the facts stated in them. The restriction under Section 162 CrPC – that such statements cannot be signed by the witness – further reinforces this position: a signed Section 161 statement does not make it admissible, but the act of signing may still be treated as an irregularity affecting evidentiary weight.

Witness credibility and its impact on the case 🔗

Even before the trial stage, the credibility of a witness plays a defining role in how an investigation develops. An investigating officer assessing witness statements must weigh several factors: the consistency of the account, the witness’s proximity to the events in question, any potential motive to lie, and whether the account corroborates physical or forensic evidence collected at the scene.

A material omission in a witness’s statement – meaning the absence of an important fact that the witness later claims at trial – can damage the prosecution’s case significantly. Courts distinguish between minor omissions, which are overlooked, and material ones, which amount to contradictions. As held in Ponnuswamy Chetty v. Emperor, a minor omission cannot be elevated to a contradiction, but where the omission is central to the case, it will be treated as one.

This is precisely why the examination phase must be thorough. A poorly recorded or incomplete statement – whether due to delay, coercion, or carelessness – can weaken an otherwise strong case. Conversely, a well-documented, voluntary, and promptly recorded witness statement forms the backbone of a credible prosecution.

What changes under the BNSS? 🔗

The BNSS broadly retains the framework established by the CrPC, but introduces meaningful procedural upgrades. The introduction of audio-video recording as a recognised method of capturing witness statements marks a shift toward greater transparency. It makes it significantly harder for either party to later claim the statement was distorted or fabricated. The specific mandate for a woman officer to record the statements of women in sexual offence cases – a protection that existed informally in practice – is now explicitly codified. The overarching goal is to reduce procedural irregularities that have historically led to acquittals not because the accused was innocent, but because the investigation was faulty.

Why this matters beyond the textbook 🔗

Witness examination sits at the intersection of police power and individual rights. The law gives investigating officers broad authority to call and question people – but that authority is bounded by jurisdictional limits, written procedures, special protections for the vulnerable, and an absolute bar on coercion. Every procedural safeguard exists because the history of criminal justice in India – and globally – shows that unchecked police power during investigation leads to wrongful convictions and the suppression of truth.

For law students, understanding these provisions is not just about memorising sections. It is about seeing how a procedural framework balances the state’s interest in solving crime against the individual’s right to dignity, fairness, and protection from self-incrimination. The examination of a witness is rarely a neutral or mechanical act – it is where investigations are made or broken.

What do you think? If witness statements recorded under Section 180 BNSS cannot be used as substantive evidence in court, how much does the accuracy of their recording actually matter to the final outcome of a trial? And with audio-video recording now permitted under the BNSS, do you think this reform is sufficient to address the long-standing concerns around manipulation of witness statements during police investigations?

References

1. https://www.latestlaws.com/bare-acts/central-acts-rules/bnss-section-180-examination-of-witnesses-by-police/
2. https://blog.ipleaders.in/section-160-crpc/
3. https://menrightsindia.net/2018/03/police-can-only-call-people-via-written-notice-for-investigation-madras-high-court-guidelines-on-crpc-160.html
4. https://restthecase.com/knowledge-bank/crpc/section-160
5. https://blog.ipleaders.in/section-161-crpc/
6. https://www.ijllr.com/post/section-180-bnss-echoes-of-section-161-crpc-with-a-constitutional-core
7. https://www.apnilaw.com/legal-articles/acts/section-161-crpc-vs-section-180-bnss-examination-of-witnesses-during-investigation/
8. https://www.leadindia.law/blog/en/recording-of-statement-under-section-161-of-crpc/
9. https://www.legalserviceindia.com/legal/article-12886-statement-of-witness-to-police.html
10. https://www.leadindia.law/blog/en/what-is-section-180-of-bnss/