Legal Requirements for Exhibiting FIRs When the Informant Uses a Thumb Impression Instead of Signature

In the complex landscape of Indian criminal jurisprudence, the First Information Report (FIR) serves as the foundational document that triggers the machinery of justice. For literate individuals, a signature suffices to authenticate this document. However, for a significant portion of the population who may be illiterate, a thumb impression (Left Thumb Impression or LTI, and Right Thumb Impression or RTI) is the standard method of authentication. While this is legally acceptable, a common procedural hurdle arises during the trial: the question of whether the FIR can be exhibited as evidence.

A frequent query in criminal defense and prosecution is: Informant Thumb Impression: Why FIR Not Exhibited? To the layperson, the presence of a thumb impression seems like sufficient proof of identity. However, in a court of law, exhibiting a document is a formal process that requires the document to be proved according to the Indian Evidence Act. If the thumb impression is not properly verified or if procedural lapses occur, the court may refuse to exhibit the FIR, potentially weakening the prosecution's entire case.

The Procedural Bridge Between Thumb Impression and Exhibition

Under Section 154 CrPC, an FIR records the first information of a cognizable offence. When an informant provides a thumb impression, the document does not automatically become a piece of evidence. The prosecution must bridge the gap between the physical mark on the paper and the identity of the person who made it.

Typically, the exhibition of an FIR with a thumb impression requires the testimony of the scribe (the person who wrote the report), the recording officer, or attesting witnesses. These individuals must confirm that the thumb impression indeed belongs to the informant. Without this corroboration, the document remains a mere piece of paper and cannot be marked as an exhibit.

As noted in legal precedents, the FIR is not substantive evidence but is used to corroborate or contradict witnesses under Sections 157/145 Evidence Act

Rambharosh @ Konda VS State of M. P.

Why Courts May Refuse to Exhibit FIRs with Thumb Impressions

There are several critical scenarios where a court may decide that an FIR featuring a thumb impression cannot be exhibited.

1. Failure of Identification and Scribe Testimony

The most common reason for non-exhibition is the inability of the prosecution to prove who actually placed the thumb impression on the document. If the informant is called to the stand and fails to recognize the mark, or if the scribe is not examined, the document's authenticity is compromised.

For example, in one instance, the court observed: The informant is examined as PW-4 by the prosecution and, in her deposition, the informant did not identify her right thumb impression put in the so-called fardbeyan 2024 0 Supreme(Pat) 619. In such cases, if the formal FIR was registered late and the scribe was not produced, the failure to exhibit the document can be fatal to the prosecution's narrative.

2. Suspicions of Manipulation or Tampering

Courts are highly vigilant regarding the integrity of the document. If there is evidence that the text of the FIR was altered after the thumb impression was affixed, the court will likely refuse to exhibit it.

Evidence of tampering, such as some lines have been squeezed in after taking thumb impression of PW1 1988 0 Supreme(Cal) 143, creates a reasonable doubt about the document's authenticity. Similarly, irregularities like missing timestamps or the use of different pens on disclosure statements can lead to a refusal of exhibition 2005 5 Supreme 414.

3. Hostile Informants and Denial of Contents

A thumb impression is only as valid as the intent behind it. If an informant turns hostile and claims they were forced to provide a thumb impression without knowing the contents of the FIR, the document's evidentiary value vanishes.

A case in point involves a victim who stated that she has put her right thumb impression over the paper... without knowing the contents of the application 2018 0 Supreme(Jhk) 2613. When the person who supposedly initiated the legal process denies the substance of the report, the FIR is often not exhibited as reliable evidence, frequently leading to the acquittal of the accused.

The Intersection with Section 27 of the Evidence Act

The issue of thumb impressions extends beyond the FIR to disclosure statements made by the accused. Under Section 27 Evidence Act, information leading to a recovery is admissible. However, if these statements lack the thumb impression or signature of the accused, their reliability is severely diminished.

Legal findings indicate that The absence of the signatures or the thumb impression of an accused on the disclosure statement recorded under Section 27 of the Evidence Act detracts materially from the authenticity and reliability of such statement

Rambharosh @ Konda VS State of M. P.

Lessons from Landmark Legal Battles

The scrutiny of documentary evidence, including signatures and thumb impressions, is evident in high-profile cases:

• Parliament Attack Case (Mohd. Afzal Guru): The trial involved hundreds of documents. The court emphasized that confessions or disclosures without proper procedural safeguards—such as missing endorsements—could not be fully relied upon 2005 5 Supreme 414.
• Nirbhaya Case: While FIR delays were condoned because there was no motive to falsely implicate the accused, the verification of thumb impressions through witnesses remained a critical part of the evidentiary chain 2017 3 Supreme 385.
• Raj Kaur Case: In this matter, the fact that the informant put her thumb impression on documents was analyzed alongside other evidence, and doubts regarding the credibility of the witness were raised when the overall narrative lacked consistency 2007 6 Supreme 164.

Defense Strategies and Prosecution Burdens

For the prosecution, the burden is to meticulously prove the chain of custody of the FIR. This involves producing the recording officer and ensuring the informant identifies the thumb impression. They must also explain any delays in lodging the FIR to prevent the court from assuming the thumb impression was obtained as an afterthought.

Defense counsel, conversely, often target these procedural gaps through:* Expert Examination: Requesting forensic fingerprint experts to compare the LTI/RTI on the FIR with the informant's actual prints SANJAY KUMAR SHAHI vs STATE OF BIHAR.* Cross-Examination of Scribes: Challenging the scribe to prove the exact circumstances under which the thumb impression was taken.* Highlighting Omissions: While an FIR is not an encyclopaedia of prosecution case 2016 0 Supreme(Bom) 248, a total failure to prove the authentication of the document can be a decisive factor in securing an acquittal.

Summary and Key Takeaways

The exhibition of an FIR is not a mechanical formality but a rigorous evidentiary requirement. A thumb impression is a valid substitute for a signature, but it requires active proof in court.

• Verification is Mandatory: A thumb impression must be identified by the informant, the scribe, or attesting witnesses to be exhibited.
• Procedural Lapses Matter: Lack of scribe testimony or inconsistencies in the document can lead the court to refuse exhibition.
• Impact on Case Outcome: If the FIR is the primary piece of evidence and it is not exhibited, the prosecution's case may collapse, particularly in cases based on circumstantial evidence.
• Forensic Recourse: In disputed cases, courts may rely on Finger Print Bureau reports to verify authenticity 2022 0 Supreme(Pat) 714.

Generally, while minor omissions in an FIR may be overlooked, the failure to prove the very authenticity of the document—the thumb impression—often results in the benefit of the doubt being given to the accused.