Preventive detention allows authorities to detain a person to prevent a possible future threat rather than punish a past offence. Although it may be used to protect public order and national security, it raises concerns about personal liberty, arbitrary detention and misuse of state power.

Why in the News?

On October 11, 2026, the Supreme Court directed the Centre and Delhi Police to ensure the free movement of people and vehicles during protests in Delhi, subject to law and public order. The directions followed the detention of thousands of people attempting to reach Jantar Mantar for protests demanding the resignation of Chief Election Commissioner Gyanesh Kumar and the withdrawal of the Special Intensive Revision (SIR) of electoral rolls. The Court emphasised that detentions must follow the procedure established by law and that peaceful assemblies should be allowed in accordance with applicable restrictions.

1. What Is Preventive Detention?

Preventive detention means detaining a person without a criminal trial or conviction to prevent a possible future threat. It differs from punitive detention, which is imposed as punishment for an offence already committed. Preventive detention may be authorised under specific laws on grounds related to national security and public order.

  • National Security Act (NSA), 1980: Allows preventive detention when the prescribed legal conditions are met.
  • Purpose: To prevent anticipated harmful activities rather than punish past conduct.
  • Main concern: Detention without a trial creates a risk of arbitrary restrictions on personal liberty.

Preventive detention must be distinguished from ordinary arrest or detention during protests. The legal basis and safeguards depend on the circumstances and the law being applied.

2. Section 163 of BNSS: Prohibitory Orders

Section 163 of the Bharatiya Nagarik Suraksha Sanhita (BNSS), 2023, broadly replaces the role previously performed by Section 144 of the Code of Criminal Procedure, 1973. It empowers designated Executive Magistrates to issue urgent temporary orders when immediate action is necessary to prevent harm or maintain public order. Such orders may address:

  • Obstruction or danger to people lawfully carrying out their duties.
  • Threats to human life, health or safety.
  • Disturbances of public tranquillity.
  • Riots and affrays (violent public disturbances).

The provision is preventive in nature. An order may be issued without prior notice where urgency requires it, but the authority must have sufficient grounds for action. Important distinction: A prohibitory order under Section 163 does not automatically mean that every person in the area has been preventively detained. Restrictions on assembly and detention of individuals are separate legal actions. In a related development, Delhi Police Designates Three New Protest Sites After Jantar Mantar Removal, highlighting the importance of understanding the legal framework governing public demonstrations, restrictions on assembly, and the balance between maintaining public order and protecting citizens’ fundamental rights. 

3. Evolution of Preventive Detention in India

Preventive detention has a long history in India, beginning with colonial laws used to control political activity and continuing through post-Independence legislation.

  • Rowlatt Act, 1919: Enabled detention without trial during British rule.
  • Defence of India Act, 1939: Provided extensive powers during the Second World War.
  • Preventive Detention Act, 1950: Introduced after Independence and remained in force until 1969.
  • COFEPOSA, 1974: The Conservation of Foreign Exchange and Prevention of Smuggling Activities Act provides for preventive detention for specified purposes.
  • Maintenance of Internal Security Act (MISA), 1971: Used extensively during the Emergency (1975–1977); repealed in 1978.
  • National Security Act, 1980: Established a continuing legal framework for preventive detention in specified circumstances.
  • Unlawful Activities (Prevention) Act (UAPA), 1967: Provides measures to address unlawful activities and terrorism, including provisions permitting prolonged detention during criminal proceedings in specified circumstances.

These laws reflect the continuing debate over the balance between state security and individual liberty.

4. Supreme Court Directions on the Delhi Protests

On October 11, 2026, the Supreme Court held an extraordinary hearing concerning restrictions and alleged unlawful detentions linked to protests in Delhi. The Court directed the authorities to:

  • Ensure the free movement of people and vehicles, subject to law and public order.
  • Allow Delhi Metro and railway services to operate normally.
  • Ensure internet services remain available in accordance with the law.
  • Review barricades based on public-order and traffic requirements.
  • Prevent unlawful detention and ensure that all detentions follow legal procedures.
  • Allow peaceful assemblies in accordance with the law, except where valid prohibitory orders apply.
  • Ensure lawyers, journalists and other professionals can perform their duties.

The Court also issued notice in contempt proceedings alleging violation of its October 9 order and directed the authorities to submit a compliance report by October 13, 2026. Petitions alleging mass detentions were also scheduled to be heard.

5. Important Supreme Court Judgments

The has repeatedly emphasised that preventive powers must be exercised within legal limits and cannot become a routine means of restricting liberty.

Babulal Parate v. State of Maharashtra (1961)

The Court upheld the constitutional validity of the relevant prohibitory-order provision while recognising that such powers must operate within the limits prescribed by law.

Khudiram Das v. State of West Bengal (1975)

The Court stressed the importance of communicating the grounds of preventive detention and allowing the detainee to challenge the order. The detaining authority must have relevant grounds and cannot exercise its power arbitrarily.

Maneka Gandhi v. Union of India (1978)

The judgment established that a procedure restricting personal liberty under Article 21 must be just, fair and reasonable.

Ramlila Maidan Incident (2012)

The Supreme Court criticised the use of Section 144 against a sleeping crowd at Ramlila Maidan. It emphasised that such powers should be used in grave and urgent circumstances to prevent immediate harm.

Mazdoor Kisan Shakti Sangathan v. Union of India (2018)

The Court set aside a National Green Tribunal order imposing a complete ban on protests along Jantar Mantar Road. It held that demonstrations should not be prohibited altogether and directed the authorities to establish a system for regulating protests and granting permissions.

Shaik Naznen v. State of Telangana (2022)

The Court observed that preventive detention powers are exceptional because they directly affect individual freedom and liberty. They cannot be exercised routinely.

Ameena Begum v. State of Telangana (2023)

The Court emphasised the importance of constitutional safeguards, particularly those under the golden triangle of Articles 14, 19 and 21.

6. Constitutional Safeguards Against Preventive Detention

Article 22 of the Constitution provides specific safeguards against arbitrary preventive detention. These safeguards aim to ensure that detention follows constitutional requirements and that the affected person has an opportunity to challenge it.

  • Article 22(4): Generally restricts preventive detention beyond three months without review by an Advisory Board, subject to constitutional provisions and exceptions.
  • Article 22(5): Requires the authorities to communicate the grounds of detention as soon as possible and provide an opportunity to make a representation against the order.
  • Judicial review: Courts can examine whether the detention complies with the law and constitutional safeguards.
  • Article 32: Allows individuals to approach the Supreme Court for the enforcement of fundamental rights.

The detainee must receive sufficient information about the grounds of detention to make an effective representation, subject to constitutional exceptions.

7. Key Issues and Challenges

Preventive detention presents a difficult balance between public safety and individual Freedom.

  • Risk of misuse: Broad preventive powers may be used without sufficient justification.
  • Limited opportunity to challenge detention: The absence of an ordinary criminal trial makes effective safeguards especially important.
  • Public order versus peaceful protest: Authorities must distinguish peaceful demonstrations from activities that create a legally recognised threat.
  • Accountability: Authorities must be able to justify detention under the applicable law.

Conclusion

Preventive detention is an exceptional legal power intended to prevent future threats, but it directly affects personal liberty and constitutional rights. The Supreme Court has emphasised that preventive powers must be exercised carefully and within legal limits. Effective safeguards under Article 22, judicial oversight and respect for peaceful assembly are essential to balance national security and public order with individual freedom.