The NIA filed chargesheets against R K Meghen alias Saniyama and 18 others belonging to the insurgent outfit based in Manipur.
While Meghen was arrested in 2009 in Bihar the others were arrested since them in various raids conducted in the city.
NIA sources said the chargesheets were filed against the ultra for their involvement in heinous crimes including waging war against the country and extortion.
Deccan Herald is on WhatsApp Channels | Join now for Breaking News & Editor's Picks