Chandigarh (Punjab) [India], August 17 (ANI): In a major breakthrough, Punjab Police arrested drug smuggler identified as Gulab Singh, who is a main accused in the 77kg heroin recovery case, said the Director General of Police (DGP) Punjab Gaurav Yadav here on Saturday. The development came about a year after State Special Operation Cell (SSOC) Fazilka had busted two separate cross-border drug smuggling rackets with the arrest of four drug traffickers after recovering 77.8Kg heroin (41.8Kg+36Kg) and three pistols from their possession. The consignment had come via the riverine route. Two separ…