CHENNAI: The Chennai zonal unit of the Narcotics Control Bureau (NCB) has arrested three men for smuggling 3.9 kg of ephedrine, a controlled substance, from Chennai to Mumbai via Bengaluru.Based on information, NCB sleuths secured one of them at Periamet in Chennai on March 25 (Saturday) and seized the drug, which he had hidden in three handbags and embroidery mats. Based on his inputs, another man,...