National Investigation Agency (NIA) is presently interrogating two arrested senior National Socialist Council of Nagaland-Isak-Muivah (NSCN-IM) militants in Dimapur District of Nagaland, reports East Mojo on July 10. On July 4, two senior leaders Rayilung Nsarangbe, treasurer in prime minister's office of NSCN (IM) and self-styled private Lamci Iralu were arrested along with four others in extortion racket case. According to sources, preliminary NIA investigation reveals the extortion racket to be part of larger conspiracy involving high profile persons and the extortion money allegedly being used to fund ‘militant activities and a portion routed through certain companies for various investments’.