National Security Act Was Implemented on 27 December 1980. The act extends to the whole of India. National Security Act allows Police to detain a person for months if it feels that he/she is a threat to national security. The individual also need not be informed of the charges for 10 days.
The detained individual can appeal before a high court advisory board but is not allowed a lawyer during the trial.
According to the National Security Act, the grounds for preventive detention of a person include:
A. Acting in any manner harmful to the defence of India, the relations of India with foreign powers, or the security of India.
B. Regulating the continued presence of any foreigner in India or with a view to making arrangements for his expulsion from India.
C. Preventing them from acting in any manner harmful to the security of the State or from acting in any manner harmful to the maintenance of public order or from acting in any manner harmful to the maintenance of supplies and services essential to the community it is necessary so to do.
The person is not charged during this period of detention. the goal of National security act is to prevent person from committing a crime. Also, the individual can be put under preventive detention for months if authorities are satisfied that he/she is a threat to national security or law and order.
The maximum period of detention is 12 months. The order can also be made by the District Magistrate or a Commissioner of Police under their respective jurisdictions, but the detention should be reported to the State Government along with the grounds on which the order has been made. No such order shall remain in force for more than twelve days unless approved by the State Government. The National Security Act may also be invoked if a person assaults a policeman on duty.
The National Crime Records Bureau (NCRB), which collects and analyses crime data in the country, does not include cases under the NSA in its data as no FIRs are registered. Hence, no figures are available for the exact number of detentions under the NSA.
To put It in simple terms this act allows preventive detention for months if authorities are satisfied that a person is threat to national security.