The Narcotics Control Bureau (NCB) arrested seven foreigners for allegedly running a clandestine cross-border heroin smuggling racket and seized narcotics tablets worth over INR 100,000 in a separate case in Punjab, officials said on August 23, reports Outlook India. Officials said the drug seizure was effected by NCB officials of Chandigarh zone as the roots of the case are in Punjab. The drug is heavily trafficked to Bangladesh and Indian agencies are on their guard to check its transport across the border.