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Checking relevance for TOFAN SINGH VS STATE OF TAMIL NADU...

TOFAN SINGH VS STATE OF TAMIL NADU - 2021 2 Supreme 1 : In the Supreme Court’s judgment in Selvi v. State of Karnataka (2010), the Court held that the results of a polygraph test are personal testimony and therefore fall within the protection of Article 20(3) of the Constitution. Compulsory administration of a polygraph test violates the right against self‑incrimination and cannot be admitted as evidence. Even when administered voluntarily, the test results themselves are not admissible, though any information or material discovered as a result of the test may be admitted under Section 27 of the Evidence Act.Checking relevance for Amlesh Kumar VS State of Bihar...

Amlesh Kumar VS State of Bihar - 2025 0 Supreme(SC) 950 : The Supreme Court’s recent rulings (e.g., Selvi v. State (2015) and subsequent judgments up to 2025) confirm that any involuntary polygraph (lie‑detector) test violates Articles 20(3) and 21 of the Indian Constitution and its results cannot be admitted as evidence. A polygraph test may be administered only voluntarily, with the accused’s informed consent, presence of a lawyer, recording before a Judicial Magistrate, and other safeguards prescribed by the NHRC Guidelines (2000). Even when voluntarily taken, the test’s results are not admissible directly; only information discovered thereafter may be used under Section 27 of the Indian Evidence Act, 1872.Checking relevance for Rajesh Talwar VS C. B. I. ...

Checking relevance for STATE OF U. P. VS SUNIL...

STATE OF U. P. VS SUNIL - 2017 4 Supreme 164 : In Selvi v. State of Karnataka (2010) the Supreme Court of India held that polygraph examination is a testimonial act. Compulsory administration of a polygraph test amounts to ‘testimonial compulsion’ and therefore triggers the protection of Article 20(3) of the Constitution, limiting its admissibility as evidence.Checking relevance for Captain Manjit Singh Virdi (Retd. ) VS Hussain Mohammed Shattaf...

Captain Manjit Singh Virdi (Retd. ) VS Hussain Mohammed Shattaf - 2023 4 Supreme 198 : In the Bombay High Court (Revision Application No. 135 of 2012, order dated 17 July 2013), the court examined the use of polygraph testing as part of a psychological evaluation. The judgment held that while polygraph results (and related BEOS profiling) are admissible as material evidence, they are not sufficient on their own to secure a conviction. The court emphasized that at the charge‑hearing stage the entire prosecution evidence must be considered, and that reliance solely on polygraph findings (as the lower court had done) constitutes an abuse of process. This decision reflects a recent legal development in India that polygraph tests can be admitted but their weight is limited and must be evaluated alongside other evidence.Checking relevance for Mehmood Nayyar Azam VS State of Chattisgarh...

Mehmood Nayyar Azam VS State of Chattisgarh - 2012 5 Supreme 370 : In Smt. Selvi & others v. State of Karnataka (AIR 2010 SC 1974), the Supreme Court ruled that the compulsory administration of polygraph examinations (along with narcoanalysis and brain electrical activation profile tests) amounts to ‘cruel, inhuman or degrading treatment’ and violates Article 21 of the Indian Constitution, thereby prohibiting forced polygraph tests in criminal investigations.

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Recent Judicial Developments

2021 SC: Criminal Trials Guidelines... vs. State of Andhra Pradesh (2021) 10 SCC 598 – Accused right to scientific test results if voluntarily undergone ["GOPAKUMAR S/O KARUTHAKUNJU VS STATE OF KERALA - Kerala"].
Sudhir Chaudhary (latest 3-Judge Bench): Voluntary tests permissible with NHRC safeguards; distinguishes from Selvi (involuntary) ["Naveen Krishna Bothireddy (A1) vs State of Telangana - Telangana"].
Accused can access/use voluntary polygraph/brain mapping results at trial stage ["GOPAKUMAR S/O KARUTHAKUNJU VS STATE OF KERALA - Kerala"] ["GOPAKUMAR vs STATE OF KERALA - Kerala"] ["Neha Bansal VS Central Bureau of Investigation - Karnataka"] ["Mekhala Dwarakanath B. , M. D. VS State By Central Bureau Of Investigation - Karnataka"].

Analysis and ConclusionPolygraph tests remain investigatory aids in India, strictly voluntary post-Selvi (2010), with 2021 SC rulings enhancing accused access to results for fair trial, but inadmissible as evidence due to reliability concerns; no major shift to admissibility or compulsion ["GOPAKUMAR S/O KARUTHAKUNJU VS STATE OF KERALA - Kerala"] ["Naveen Krishna Bothireddy (A1) vs State of Telangana - Telangana"] ["Aboobakkar @ Abu VS State Of Kerala Represented By Public Prosecutor - Kerala"].

Latest Developments on Polygraph Tests in Indian Law

Polygraph tests, often popularized in movies as lie detectors, play a controversial role in criminal investigations worldwide. In India, their use has sparked intense legal debates over fundamental rights. What's the latest development on polygraph tests in the judiciary? This blog dives into the evolving landscape, anchored by the landmark Selvi v. State of Karnataka (2010) 7 SCC 263, and recent judicial applications. We'll explore constitutionality, evidentiary value, and practical implications—essential reading for lawyers, accused persons, and anyone navigating criminal proceedings.

Whether you're facing an investigation or advising clients, understanding these nuances can prevent rights violations. Note: This is general information, not specific legal advice; consult a qualified lawyer for your case.

Constitutional Validity: Testimonial Compulsion and Mental Privacy

The Supreme Court in Selvi firmly established that involuntary polygraph tests constitute testimonial compulsion under Article 20(3) of the Constitution, which protects against self-incrimination. These tests derive knowledge from the subject's mind via physiological responses, distinguishing them from mere physical evidence like blood samples. As the Court observed: The results obtained from polygraph examination or a BEAP test are not in the nature of oral or written statements. Instead, inferences are drawn from the measurement of physiological responses recorded during the performance of these tests... However, this does not entail that the results of these two tests should be likened to physical evidence and thereby excluded from the protective scope of Article 20(3). TOFAN SINGH VS STATE OF TAMIL NADU - 2021 2 Supreme 1 STATE OF U. P. VS SUNIL - 2017 4 Supreme 164

This protection extends to investigative stages, covering accused, suspects, and witnesses, emphasizing voluntariness and reliability. TOFAN SINGH VS STATE OF TAMIL NADU - 2021 2 Supreme 1 Moreover, compulsory administration violates Article 21's substantive due process by intruding into mental privacy and amounting to cruel, inhuman, or degrading treatment. TOFAN SINGH VS STATE OF TAMIL NADU - 2021 2 Supreme 1 Mehmood Nayyar Azam VS State of Chattisgarh - 2012 5 Supreme 370

Refusal to undergo non-testimonial acts, like providing footprints, doesn't trigger Article 20(3), nor can it solely ground a conviction. STATE OF U. P. VS SUNIL - 2017 4 Supreme 164

Admissibility and Evidentiary Value

Polygraph results carry a testimonial character and are inadmissible if compelled. Even voluntary ones aren't directly admissible, as subjects lack conscious control over responses. However, discoveries from voluntary tests may be admitted under Section 27 of the Evidence Act, 1872. TOFAN SINGH VS STATE OF TAMIL NADU - 2021 2 Supreme 1 Amlesh Kumar VS State of Bihar - 2025 0 Supreme(SC) 950 Involuntary tests' reports or derived information remain per se inadmissible. Amlesh Kumar VS State of Bihar - 2025 0 Supreme(SC) 950

Disclosure-like information from tests can't form the sole conviction basis without corroboration. Amlesh Kumar VS State of Bihar - 2025 0 Supreme(SC) 950

Recent Judicial Applications: Pre-Trial Utility Without Over-Reliance

Courts increasingly treat polygraph reports as supporting material at pre-trial stages like charge framing under Section 227 CrPC or bail, without mini-trials. In one case: Psychological Evaluation of the subject Mohammed Shattaf clearly indicates his involvement in the murder... as indicated by Deception on the questions of Polygraph and by Experiential Knowledge present on the significant probes on BEOS. Captain Manjit Singh Virdi (Retd. ) VS Hussain Mohammed Shattaf - 2023 4 Supreme 198 High Courts err by ignoring such material at discharge. Captain Manjit Singh Virdi (Retd. ) VS Hussain Mohammed Shattaf - 2023 4 Supreme 198

Recent rulings, including 2023 High Court orders, reject involuntary demands in bail, deeming them contrary to Selvi and avoiding roving inquiries. Amlesh Kumar VS State of Bihar - 2025 0 Supreme(SC) 950 There's no indefeasible right to demand tests; voluntary ones require safeguards like lawyer presence and magistrate recording. Amlesh Kumar VS State of Bihar - 2025 0 Supreme(SC) 950

Practical examples abound. In a 2007 murder probe, accused underwent polygraph tests post-arrest, amid calls for CBI handover due to allegedly improper local investigation. P. K. ABDUL SATHAR VS STATE OF KERALA - 2021 Supreme(Ker) 488 Similarly, polygraphs featured in unnatural death cases where courts ordered CBI probes despite truthful results on appellants, stressing further investigation needs. Balaram Chowdhury VS Samaresh Mridha - 2020 Supreme(Cal) 347 In another, perfunctory CID probes involving polygraphs on suspects led to CBI transfers for credibility. Samaresh Mridha VS State of West Bengal - 2019 Supreme(Cal) 473 Yet, in a 2013 tenancy death, polygraphs on suspects yielded no results, and courts denied CBI absent exceptional circumstances, relying on circumstantial and DNA evidence. Awungshi Chirmayo VS Govt. of NCT of Delhi - 2018 Supreme(Del) 1138

These illustrate polygraphs as investigative tools, not conviction crutches: All these reactions are corroborated with other evidence gathered. The polygraph test was among the first scientific tests to be used by the interrogators. Adesh Kumar VS State of U. P. - 2020 Supreme(All) 1529

Exceptions and Limitations

While restrictions are strict, exceptions exist:

Voluntary Administration: Allowed with NHRC-like safeguards—informed consent before a magistrate, lawyer access, no direct evidentiary use. Amlesh Kumar VS State of Bihar - 2025 0 Supreme(SC) 950
Non-Incriminating Use: Identification/comparison with known facts evades Article 20(3). TOFAN SINGH VS STATE OF TAMIL NADU - 2021 2 Supreme 1
Pre-Trial Utility: Investigative material at charge/bail stages, but pair with other evidence to avoid abuse. Captain Manjit Singh Virdi (Retd. ) VS Hussain Mohammed Shattaf - 2023 4 Supreme 198 Amlesh Kumar VS State of Bihar - 2025 0 Supreme(SC) 950

Counterarguments on scientific progress don't override rights; public interest can't dilute Articles 20(3)/21. Amlesh Kumar VS State of Bihar - 2025 0 Supreme(SC) 950

Recommendations for Practitioners

Invoke Selvi to challenge involuntary demands in investigations or bail. For voluntary tests, ensure safeguards for Section 27 discoveries. At charge/discharge, use polygraphs as prima facie support, not standalone. Accused seeking tests should approach trial stage, proving free consent.

Key Takeaways

Involuntary polygraphs violate Articles 20(3) and 21. TOFAN SINGH VS STATE OF TAMIL NADU - 2021 2 Supreme 1
Results inadmissible directly; only Section 27 discoveries count. Amlesh Kumar VS State of Bihar - 2025 0 Supreme(SC) 950
Useful pre-trial, but corroborate with other evidence. Captain Manjit Singh Virdi (Retd. ) VS Hussain Mohammed Shattaf - 2023 4 Supreme 198
Recent cases reaffirm Selvi, with CBI probes in flawed investigations. P. K. ABDUL SATHAR VS STATE OF KERALA - 2021 Supreme(Ker) 488 Balaram Chowdhury VS Samaresh Mridha - 2020 Supreme(Cal) 347

In conclusion, polygraph tests remain potent yet constitutionally fenced tools. As Indian courts balance investigation efficacy with rights, Selvi's legacy endures, tempered by practical applications. Stay informed—the law evolves.

References:1. TOFAN SINGH VS STATE OF TAMIL NADU - 2021 2 Supreme 1: Selvi core on compulsion and safeguards.2. Amlesh Kumar VS State of Bihar - 2025 0 Supreme(SC) 950: 2023 reaffirmation.3. STATE OF U. P. VS SUNIL - 2017 4 Supreme 164: Testimonial analysis.4. Captain Manjit Singh Virdi (Retd. ) VS Hussain Mohammed Shattaf - 2023 4 Supreme 198: Charge-stage use.5. Mehmood Nayyar Azam VS State of Chattisgarh - 2012 5 Supreme 370: Article 21 violations.6. Additional cases: P. K. ABDUL SATHAR VS STATE OF KERALA - 2021 Supreme(Ker) 488, Adesh Kumar VS State of U. P. - 2020 Supreme(All) 1529, Balaram Chowdhury VS Samaresh Mridha - 2020 Supreme(Cal) 347, Samaresh Mridha VS State of West Bengal - 2019 Supreme(Cal) 473, Awungshi Chirmayo VS Govt. of NCT of Delhi - 2018 Supreme(Del) 1138

#PolygraphTests #IndianLaw #SelviJudgment

GOPAKUMAR S/O KARUTHAKUNJU VS STATE OF KERALA - 2022 Supreme(Ker) 846

It is true that those tests were conducted for the purpose of investigation. However, the petitioner who voluntarily subjected himself to the scientific examination has every right to know its result. The petitioner can very well use the same during trial. ... During the investigation stage, the petitioner requested the investigating agency to subject him to scientific test including brain mapping, polygraph and narco analysis to prove his innocence. Accordingly, brain mapping and polygraph test were conducted, but narco analysis was not ....

Naveen Krishna Bothireddy (A1) vs State of Telangana - 2017 Supreme(Online)(Tel) 95

In the latest 3-Judges Bench expression of the Apex Court in SUDHIR CHAUDHARY VS. ... Voluntary undertaking of tests is permissible, provided certain safeguards, like the one recommended by NHRC, in case of Polygraph tests are observed and similar safeguards be advised for Narcoanalysis and BEAP tests. (d). ... It is observed that as per Sections 53, 53-A and 54 Cr.P.C., Narcoanalysis, Polygraph and BEAP tests are not included and the general expression such other #HL....

GOPAKUMAR vs STATE OF KERALA - 2025 Supreme(Online)(Ker) 33270

[2025 KLT OnLine 2105 (SC)] has argued that the test results of polygraph and brain mapping are not admissible in evidence and hence no purpose will be served in providing the copy of the brain mapping and polygraph test conducted on the petitioner. ... Going by the decisions of the Supreme Court mentioned above, the accused has every right to ask the investigating agency to produce the result of the tests he had undergone voluntarily. But, the crucial question is at what stage can the accused make such a request.

P. K. ABDUL SATHAR VS STATE OF KERALA - 2021 Supreme(Ker) 488

On 08/10/2007 A2 and A3 were arrested, followed by the arrest of A1 on 10/10/2007. As the investigation progressed, the accused were subjected to polygraph tests and reports obtained. In the meanwhile, Mariyu, the wife of the deceased, filed Writ petition No. 11228/2007 before this Court for handing over the investigation to the Central Bureau of Investigation alleging that the investigation conducted by the C.B.C.I.D. was neither sufficient nor proper. She alleges that the deceased who had gone to collect 'Thejus' newspaper of which he was the distributor, was brutally mur....

Adesh Kumar VS State of U. P. - 2020 Supreme(All) 1529

All these reactions are corroborated with other evidence gathered. The polygraph test was among the first scientific tests to be used by the interrogators.

Balaram Chowdhury VS Samaresh Mridha - 2020 Supreme(Cal) 347

1, 3, 4 and 5 reveal that truthful answers had been given and there was no attempt at deceit by such persons. Both the polygraph tests and the brain-mapping conducted on the appellant nos. 9. It is also evident that polygraph tests were conducted on the five appellants in Gandhinagar, Gujarat and brain-mapping was also resorted to.

Samaresh Mridha VS State of West Bengal - 2019 Supreme(Cal) 473

Director Forensic Psychology division, DPS, Gandhinagar, Gujrat". The expert who conducted the polygraph tests of all four suspects & brain mapping of two of them is same i.e. Director Forensic Psychology division, DPS,Gandhinagar, Gujrat.

Awungshi Chirmayo VS Govt. of NCT of Delhi - 2018 Supreme(Del) 1138

Both, Raj Kumar and Amit Sharma were put to sustained interrogation. Polygraph tests were conducted on 27.12.2013 and 30.12.2013 but it yielded no result to implicate the landlord and his brother-in-law.