The Hoshiarpur police have claimed to have busted an interstate narcotics and illegal arms smuggling module by arresting four persons. Around 9.925 kg heroin, two foreign-made .30 bore pistols, eight magazines and 40 live cartridges were seized from them.The district police, quoting DGP Gaurav Yadav, said the accused were in contact with foreign-based gangsters. They were involved in drug trafficking and the supply of illegal weapons in the region. The DGP said efforts were on to trace their links.Those arrested were Manjinder Singh, alias Sonu, a resident of Pathralian village (Hoshiarpur); Shivam Bhandari of Dhina (Jalandhar); Sahil Masih, alias Monu, of Pakhoke Tahli village (Gurdaspur); and Ramel Roger of Garhshankar.