AHMEDABAD—Indian officials said on Tuesday they had seized nearly three tons of heroin originating from Afghanistan worth an estimated 200 billion rupees ($2.72 billion) amid the chaos following last month’s takeover of the country by the Taliban. Afghanistan is the world’s biggest illicit opiate supplier, but since taking power, the Islamist Taliban have said they plan to ban the drug trade, without giving details on how. Two people had been arrested in connection with the haul and investigations were ongoing, an official in Gujarat said, declining to be named as he was not authorized to speak publicly. The Directorate of Revenue Intelligence (DRI), India’s top anti-smuggling agency, seized two containers at western Gujarat’s Mundra Port on Sept. 15 after receiving intelligence they contained narcotics, the official said. The containers had been imported by a firm in the southern coastal city of Vijayawada, the official added. “Investigation conducted so far has …