Under which law were the narcotic drugs, vehicles and other articles in these cases seized?

The correct answer is the Narcotic Drugs and Psychotropic Substances Act, 1985, usually shortened to the NDPS Act. Every article recovered in these cases, meaning the poppy straw, the opium, the hydroponic cannabis, the cash, the vehicles and the country-made pistol, was seized under the relevant provisions of this Act, and further investigation into sources, destinations and supply channels is proceeding under it. Option A, the Indian Penal Code, 1860, deals with general criminal offences and is not the law under which narcotics seizures are recorded here. Option B, the Customs Act, 1962, governs import and export duties and confiscation of smuggled goods generally, and the release does not invoke it even for the parcel received from abroad. Option D, the Arms Act, 1959, is not named in the case either, although a country-made pistol with three live rounds was recovered during one of the searches.