AMRITSAR: In a major crackdown on trans-border smuggling amidst the ongoing drive to make Punjab a drug-free state as per directions of Chief Minister Bhagwant Singh Mann, the Anti-Narcotics Task Force (ANTF), Border Range, in a joint operation with the Border Security Force (BSF) has recovered a haul of 19.980 Kg heroin and apprehended four accused, including the key operative managing the supply chain, said Director General of Police (DGP) Punjab Gaurav Yadav here on Tuesday.