Post Mortem
A post mortem (autopsy) is a medical examination of a dead body conducted to determine the cause, manner, and time of death, carried out under Section 174 CrPC (Section 194 BNSS) during investigation of unnatural or suspicious deaths.
What is Post Mortem?
A **post mortem** (also called an **autopsy** or **post-mortem examination**) is a thorough medical examination of a dead body conducted by a qualified medical practitioner to determine the **cause of death**, the **manner of death** (natural, accidental, suicidal, or homicidal), and the **approximate time of death**. In legal terms, a post mortem is a crucial component of criminal investigation that provides scientific and medical evidence about how and when a person died.
The term comes from the Latin phrase "post mortem," meaning "after death." In Indian criminal law, the post mortem examination is ordered by the police or a Magistrate when the cause of death is unnatural, suspicious, or unknown.
Legal Framework in India
Section 174 CrPC / Section 194 BNSS
**Section 174 of the Code of Criminal Procedure, 1973** (now **Section 194 of the Bharatiya Nagarik Suraksha Sanhita, 2023**) governs the procedure when a person dies under circumstances that suggest suicide, homicide, accidental death, or death under suspicious or unknown circumstances.
Under this provision:
- The **police officer** investigating the case (or the officer in charge of the police station) receives information about such a death
- The officer proceeds to the place where the body is found and conducts an **inquest** — a preliminary inquiry into the apparent cause of death
- The officer prepares an **inquest report** (panchnama) in the presence of witnesses
- If the cause of death is not apparent, the body is sent for **post mortem examination** to a government hospital or medical institution
Section 176 CrPC / Section 196 BNSS
When a person dies while in **police custody** or in circumstances that raise suspicion of police involvement, the investigation is conducted by a **Judicial Magistrate** under Section 176 CrPC (Section 196 BNSS). The Magistrate has the authority to order a post mortem examination and may conduct the inquiry personally instead of leaving it to the police.
Who Performs the Post Mortem?
The post mortem is conducted by a **registered medical practitioner** employed in a government hospital or medical college. Typically, a forensic medicine specialist performs the examination. In cases of special importance — such as suspected homicides, deaths in custody, or cases attracting public attention — the post mortem may be conducted by a **medical board** consisting of two or more doctors.
Procedure of Post Mortem Examination
Steps Involved
1. **Identification of the body:** The body is identified through police records, relatives, or distinctive marks before the examination begins
2. **External examination:** The doctor examines the body externally, noting the general condition, injuries, marks, lividity (post-mortem staining), rigor mortis, and decomposition
3. **Internal examination:** The body is opened and organs are examined systematically — skull and brain, thorax (heart and lungs), and abdomen (liver, kidneys, stomach, intestines)
4. **Collection of samples:** Viscera (organs and body fluids) are preserved in sealed containers for chemical analysis. In cases of suspected poisoning, the stomach contents, blood, and liver are preserved
5. **Post mortem report:** The doctor prepares a detailed report recording all findings, opinion on the cause of death, nature and time of injuries, and whether the injuries were ante-mortem (before death) or post-mortem (after death)
Time of Examination
The **Supreme Court** and various **High Courts** have emphasised that the post mortem should be conducted as early as possible after death to preserve the body and obtain accurate findings. However, in practice, logistical constraints may cause delays.
The National Human Rights Commission (NHRC) guidelines require that post mortem in cases of **death in custody** be conducted within **24 hours** and preferably videographed.
Evidentiary Value
Expert Evidence
The post mortem report is treated as **expert evidence** under **Section 45 of the Indian Evidence Act, 1872 (Section 39 BSA, 2023)**. The doctor who performed the post mortem may be summoned as an expert witness to depose about the findings and the opinion on the cause of death.
Not Conclusive but Highly Persuasive
While the post mortem report is not conclusive proof by itself, courts attach significant weight to it. In **Anwar Ali v. State of Himachal Pradesh (2020) 10 SCC 166**, the Supreme Court observed that the medical evidence from the post mortem must be considered in conjunction with the prosecution's other evidence, and any material contradiction between the medical evidence and eyewitness testimony must be carefully evaluated.
Injuries and Weapons
The post mortem report helps the court determine:
- Whether injuries are consistent with the prosecution's version of events
- The nature of the weapon used (sharp, blunt, firearm)
- Whether injuries were sufficient in the ordinary course of nature to cause death (relevant for Section 300 IPC / Section 101 BNS — murder)
- The sequence and force of injuries
When Does Post Mortem Matter?
Murder Investigations
In homicide cases, the post mortem is often the most critical piece of evidence. It establishes the cause of death, helps identify the weapon, and determines whether the injuries were ante-mortem. This evidence is essential for framing charges under **Section 302 IPC (Section 103 BNS)** for murder or **Section 304 IPC (Section 105 BNS)** for culpable homicide not amounting to murder.
Suspicious Deaths and Dowry Deaths
Under **Section 174(3) CrPC**, when a woman dies within **seven years of marriage** under suspicious circumstances, the post mortem examination is mandatory, and the police must forward the body for examination. This is particularly relevant in **dowry death** cases under **Section 304B IPC (Section 80 BNS)**, where the cause of death is directly in issue.
Death in Custody
Deaths in police or judicial custody require mandatory post mortem examination under **Section 176 CrPC (Section 196 BNSS)**. The NHRC guidelines mandate videography of the post mortem in all custodial death cases. The findings assume critical importance in holding authorities accountable.
Insurance and Accident Claims
Post mortem reports are relevant in civil matters involving **insurance claims** (life insurance disputes where the cause of death determines liability) and **motor accident compensation** (where the nature and extent of fatal injuries are relevant to determining compensation under the Motor Vehicles Act, 2019).
Practical Significance
- **Establishes cause of death:** The post mortem is often the only scientific method to determine definitively how a person died
- **Corroborates or contradicts testimony:** Courts use post mortem findings to test the credibility of eyewitness accounts
- **Determines the nature of the offence:** Whether a case is murder, culpable homicide, suicide, or accident often depends on post mortem findings
- **Protects against fabrication:** Scientific medical evidence provides an objective check against false prosecution or false defence claims
Frequently Asked Questions
Can the family of the deceased refuse a post mortem examination?
In cases of unnatural, suspicious, or unknown death, the police have the authority under **Section 174 CrPC (Section 194 BNSS)** to send the body for post mortem, and the family's consent is not legally required. However, in cases of clearly natural death where the cause is apparent (e.g., prolonged illness with medical records), the police may not insist on a post mortem. In practice, religious and cultural sensitivities are considered, but legal requirements take precedence in cases involving suspected foul play.
Is a post mortem always necessary in every death?
No. A post mortem is required only when the death is **unnatural, suspicious, or the cause is unknown**. Deaths from known natural causes — such as old age or documented terminal illness — do not typically require a post mortem. The police officer or Magistrate decides, based on the inquest and circumstances, whether a post mortem is necessary. However, in cases of death within seven years of marriage or death in custody, the post mortem is **mandatory** regardless of the apparent cause.
Can a second post mortem be ordered?
Yes. A court may order a **second post mortem** (re-autopsy) if the first post mortem was incomplete, the findings are doubtful, or new evidence raises questions about the cause of death. This is typically done on the application of the prosecution, the defence, or the victim's family. The Supreme Court in **Prahlad v. State of Madhya Pradesh (2011)** observed that a second post mortem is an extraordinary step and should be ordered only when there are compelling reasons to doubt the first examination's findings. If the body has already been cremated, a second post mortem is obviously impossible.
Disclaimer: This glossary entry is for informational purposes only and does not constitute legal advice.
Related Legal Terms
Investigation
Investigation in criminal law is the process by which police officers collect evidence regarding a cognizable offence, governed by Sections 156-157 of the Code of Criminal Procedure, 1973 (Sections 173-175 BNSS), to determine whether charges should be filed.
Inquest
An inquest is an official inquiry conducted by a police officer or magistrate to ascertain the cause and circumstances of an unnatural, suspicious, or sudden death, as mandated under the Code of Criminal Procedure.
Evidence
Evidence is any material — oral testimony, documents, electronic records, or physical objects — presented before a court to prove or disprove facts in a legal proceeding.