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By:

Dr. Keshav Kumar and Madhubanti Das

5 October 2024 at 5:09:52 am

Science Behind Hanging and Strangulation Cases

Forensic pathology transforms subtle signs of neck compression into scientific evidence that reveals whether a death was suicide, homicide, or an accident. A simple mark around the neck can become one of the most important clues in a criminal investigation. Hanging and strangulation may appear similar, but forensic experts can determine the difference between whether a death is suicide, an accident, or murder. Through scientific examination of the body, crime scene, and surrounding evidence,...

Science Behind Hanging and Strangulation Cases

Forensic pathology transforms subtle signs of neck compression into scientific evidence that reveals whether a death was suicide, homicide, or an accident. A simple mark around the neck can become one of the most important clues in a criminal investigation. Hanging and strangulation may appear similar, but forensic experts can determine the difference between whether a death is suicide, an accident, or murder. Through scientific examination of the body, crime scene, and surrounding evidence, forensic pathology helps the dead speak the truth. The forensic study of neck compression deaths has evolved over centuries, but modern medico-legal investigation became more scientific during the 19th and 20th centuries with advancements in autopsy techniques, toxicology, and forensic imaging. Today, forensic experts use photography, histopathology, CT scans, and DNA analysis to investigate suspicious deaths. Hanging occurs when pressure on the neck is caused by the body’s own weight using a ligature such as a rope, dupatta, or wire. Strangulation, however, involves external force applied manually or with an object. While hanging is often associated with suicide, strangulation is commonly linked to homicide or assault. Forensic experts closely examine ligature marks during autopsy. In hanging, the mark is usually upward, oblique, and incomplete, while in strangulation it is more horizontal and continuous. Investigators also study fractures of the hyoid bone and thyroid cartilage, internal bleeding in neck muscles, tongue protrusion, facial congestion, and petechial haemorrhages in the eyes. Even salivary dribbling marks, knot position, and whether the body was in complete or partial suspension can provide critical medico-legal clues. These subtle injury patterns help medical examiners reconstruct the final moments before death, turning small physical findings into powerful courtroom evidence. India has witnessed several important cases where forensic experts played a crucial role in differentiating hanging from strangulation. The mysterious death of Sunanda Pushkar brought national attention to forensic pathology, toxicology, and injury interpretation in suspicious death investigations. In a Ghaziabad dowry death case, autopsy findings including a fractured hyoid bone and characteristic ligature marks helped establish homicidal strangulation, leading to conviction. The infamous Joshi-Abhyankar serial murders further highlighted how forensic examination of ligature patterns and crime-scene evidence can assist investigators in linking multiple murders and identifying offenders. These cases reflect the growing role of scientific evidence in India’s criminal justice system. The Supreme Court of India has repeatedly emphasised the importance of forensic and scientific evidence in criminal investigations rather than relying solely on confessions or assumptions. Courts today increasingly depend on autopsy reports, toxicology findings, DNA analysis, and expert medical testimony in suspicious death cases. In Ponnusamy v. State of Tamil Nadu (2008), the Supreme Court relied on the forensic assessment of ligature marks and neck injuries to distinguish suicidal hanging from homicidal strangulation. The judgement became a landmark precedent in forensic jurisprudence. Similarly, in Ravirala Laxmaiah v. State of Andhra Pradesh (2013), forensic pathology and autopsy findings helped expose a staged suicide narrative and establish the true manner of death. Globally, organisations such as INTERPOL and the United Nations Office on Drugs and Crime encourage scientific death investigation systems to strengthen justice delivery. Institutions like the National Forensic Sciences University, AIIMS forensic departments, and state forensic laboratories continue to advance forensic pathology research and training in India. Artificial intelligence is now entering forensic medicine as well. AI-assisted tools are being developed to analyse autopsy images, identify injury patterns, reconstruct crime scenes, and reduce human error during medico-legal examinations. Researchers are exploring digital autopsy and 3D reconstruction technologies for better analysis of neck injuries and suspicious deaths. Behind every ligature mark lies a silent story waiting to be interpreted by science. Whether the truth points to suicide, homicide, or accident, forensic pathology ensures that justice is guided not by assumptions, but by evidence hidden within the human body itself. (Kumar is a retired IPS and forensic consultant to the Assam government. Das is a student of National Forensic University, Guwahati.)

Lingua Pragmatica

Updated: Mar 20, 2025

As Southern leaders like M.K. Stalin rage against Hindi, Andhra Pradesh’s Chief Minister Chandrababu Naidu offers a model of pragmatism over parochialism.

Chandrababu Naidu
Andhra Pradesh

Amid the cacophony of opposition in southern states to Hindi, Andhra Pradesh CM N. Chandrababu Naidu has taken a markedly pragmatic stance by remarking recently in the state Assembly that there was no harm in learning other languages. Hindi, Naidu noted, was useful for communication across India, particularly in political and commercial hubs like Delhi. His remarks, though avoiding explicit mention of the NEP, were widely seen as an endorsement of multilingualism and a rebuke to the linguistic chauvinism that has gripped parts of the South.


Few issues in India stir political passions quite like language. It is not merely a means of communication but a marker of identity, a relic of colonial resistance, and a source of political mobilization. In the southern states, where anti-Hindi sentiment has long been entrenched, the National Education Policy (NEP) 2020 and its three-language formula have reignited old tensions. No state embodies this defiance more than Tamil Nadu, where the ruling Dravida Munnetra Kazhagam (DMK) led by M.K. Stalin has framed the policy as an assault on its linguistic autonomy.


Naidu’s words, welcomed by his ally and Deputy Chief Minister Pawan Kalyan, mark a sharp contrast with the DMK’s position. Tamil Nadu’s hostility towards Hindi dates back to the 1930s, when C. Rajagopalachari’s attempt to introduce it in schools met with fierce resistance. The anti-Hindi agitations of the 1960s cemented the DMK’s ideological stance, with its first Chief Minister, C.N. Annadurai, famously warning that Hindi imposition could push Tamil Nadu towards secession.


The question, however, is whether this rigid opposition serves Tamil Nadu’s interests. While Stalin, with an eye to the upcoming Tamil Nadu Assembly polls, has been relentlessly portraying Hindi as a threat to his state’s regional identity, Naidu, a partner of the BJP-led Centre, is framing it as a tool for economic mobility. His argument is not that Hindi should replace Telugu or English but that it offers a competitive advantage.


The economic case for multilingualism is compelling. Indians who speak multiple languages tend to have better job prospects, higher earnings and greater geographic mobility. Andhra Pradesh’s Telugu-speaking diaspora is a case in point. Telugus make up a significant proportion of Indian-origin professionals in the United States, the Gulf, and Southeast Asia as Naidu pointed out, hinting that this success story was built not on linguistic rigidity but on adaptability.


In a country where inter-state migration is rising and where Hindi remains the most widely spoken language, refusing to learn it amounts to self-imposed isolation. Tamil Nadu’s approach, by contrast, risks limiting its youth. The DMK government has refused to implement the three-language policy, keeping schools strictly bilingual with Tamil and English. Its justification that Hindi is not necessary for global success could be true in a narrow sense but ignores the domestic context. If Tamil filmmakers can dub their movies into Hindi to expand their audience, why should Tamil students be denied access to the language that could open more doors for them within India?


The DMK has accused successive central governments, particularly under the Bharatiya Janata Party (BJP), of pushing Hindi at the expense of regional languages. Yet, rejecting Hindi outright is an overcorrection. The reality is that Hindi is an important language in India’s economic and political landscape. Naidu’s position, one of accommodation rather than confrontation, offers a middle ground that other Southern leaders would do well to consider.


Some states already recognize this. Karnataka, despite its own history of linguistic pride, has allowed Hindi to be taught as an optional language. Kerala, whose migrants work in Hindi-speaking regions and the Gulf, has been less hostile to Hindi education. Naidu’s model, balancing regional identity with practical necessity, offers a way forward. Languages should be embraced, not politicized. Southern leaders would do well to listen to him.

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