The Maintenance of Internal Security Act was a controversial law passed by the Indian parliament in 1971 giving the administration of Prime Minister Indira Gandhi and Indian law enforcement agencies very broad powers – indefinite preventive detention of individuals, search and seizure of property without warrants, and wiretapping – in the quelling of civil and political disorder in India, as well as countering foreign-inspired sabotage, terrorism, subterfuge and threats to national security. From Wikipedia