The National Investigation Agency (NIA) arrested Harwinder Singh alias Soshi Pannu, the key accused in the Rs 700 crore worth narcotics haul case, at Punjab's Attari in 2022, an official statement issued on Tuesday said.

The accused, a resident of Naushehra Pannuan in Punjab's Tarn Taran, used to distribute drugs, handle cash and launder drug proceeds through banking as well as hawala channels, as per the NIA investigations.