The State Government can detain a person under Section 3(2) of the National Security Act, 1980 for-

Section 3(2) NSA, 1980 lets the State Government detain a person to prevent him acting prejudicially to the security of the State, the maintenance of public order, or the maintenance of supplies and services essential to the community. Defence of India, foreign relations and the detention of foreigners are grounds under section 3(1), not section 3(2).