During the course of investigation into a case, the agency came to know that Shelly Sumi, the wife of self-styled 'Lt Gen' Nikki Sumi of NSCN(K), and her associates were in possession of cash and other incriminating documents in their houses in Dimapur, it said.
Accordingly, searches were conducted at the houses of Shelly Sumi, Ikheli Yeptho, Shutoli and Hozheli at Naharbari Basti, Dimapur, Nagaland today and Rs 27,90,550 cash was recovered from the premises, the release said.
Also, 12 mobile phones, three laptops, one hard disk and 33 incriminating documents were seized, the release issued by the NIA said.
Earlier, on April 7, based on intelligence about the movement of Shelly Sumi to Mayanmar believed to be carrying huge amount of money to fund NSCN-K, a mobile checkpost was established near Karong Village on NH-2 by the Assam Rifles and a bus moving from Dimapur to Imphal was intercepted.
An FIR was registered in the case by the Manipur Police. Subsequently, the accused were granted bail and the articles and cash were released to the accused by a court.
The case was later taken over by the National Investigation Agency as per the directions of the Union home ministry.