CHANDIGARH: In a major blow to the Pakistan’s ISI-backed trans-border drug trafficking module amidst the ongoing anti-drug campaign “Yudh Nashian Virudh”, Punjab Police’s Anti-Nercotics Task Force (ANTF) has arrested a Kapurthala-based notorious drug smuggler and recovered 50 kg heroin from his possession, said Director General of Police (DGP) Punjab Gaurav Yadav here on Saturday.