National Security Act

The National Security Act, 1980 (NSA) is a preventive detention law authorising the Central or State Government to detain any person whose detention is deemed necessary to prevent them from acting in a manner prejudicial to: (a) the defence of India; (b) the relations of India with foreign powers; (c) the security of India; (d) the maintenance of public order; or (e) the maintenance of supplies and services essential to the community. Unlike criminal law, NSA detention does not require an offence to have been committed — it is based on the executive's subjective satisfaction that detention is necessary to prevent future prejudicial action.

The NSA has been controversial since its enactment. Critics argue that it is regularly misused by State governments to detain political opponents, journalists, activists, and persons involved in communal tensions — persons whose activities are more appropriately dealt with through normal criminal law. Defenders argue that preventive detention is a necessary tool for maintaining public order and national security in situations where normal criminal law cannot quickly respond to emerging threats. The courts have tried to balance these concerns by imposing strict requirements on the procedure for detention and the quality of the grounds of detention.

NSA detention may last up to 12 months, with extensions permitted in certain circumstances. The maximum detention period under the NSA is longer than under COFEPOSA — reflecting Parliament's view that threats to national security and public order may require longer periods of preventive detention. During the 12-month period, the Advisory Board reviews the detention at specified intervals; only if the Advisory Board confirms the sufficiency of the grounds at each stage can detention continue.

The NSA, unlike COFEPOSA, does not require the detainee to be involved in smuggling or forex violations — the grounds for detention under the NSA are broader and include public order and essential services. This broader scope has led to the NSA being used in cases involving cow slaughter disputes, communal incidents, and pandemic-related violations of essential services orders — uses that have been contested before courts, with courts sometimes finding the nexus between the detainee's activities and the NSA's stated purposes to be insufficient.

For advocates challenging NSA detentions, the habeas corpus petition to the High Court is the primary remedy. The grounds most frequently argued are: (1) the grounds of detention are vague or non-specific — general assertions that the detainee is a 'threat to public order' without specific factual basis; (2) the grounds of detention were communicated with an inordinate delay; (3) the detainee was not supplied the relied-upon documents in a language they understand; (4) the Advisory Board did not give the detainee an adequate opportunity to make oral representations; and (5) there is no rational connection between the detainee's acts and the object of the detention order. Courts on habeas corpus apply a fairly rigorous standard to preventive detention orders — the liberty of the person demands it.