National Investigation Agency (NIA) has arrested a key accused in the Muzaffarpur AK-47 rifle and ammunition seizure case, marking a major breakthrough in its probe into an arms smuggling racket. The accused, Manjoor Khan alias Babu Bhai, was apprehended for his alleged role in conspiring with others to smuggle sophisticated prohibited bore weapons, including AK-47 assault rifles, from Nagaland into Bihar. With Khan’s arrest, the NIA believes it has tightened the noose around the arms smuggling network.