He was handling investigations pertaining to cases filed on the abduction and murder of 11 youths, the Lasantha Wickremetunga murder as well as on the assaults on Keith Noyahr, Upali Tennakoon and Namal Perera.
IP Nishantha was behind collecting evidence on the murder case of student Vidya in Jaffna, which led to all the case suspects being arrested.
He also presented facts before the courts to arrest Chief of Defence Staff Admiral Ravindra Wijegunawardena and to produce him behind courts. The CDS faced charges over aiding and abetting Lt. Prasad Hettiarachchi alias ‘Navy Sampath’. Hettiarachchi to evade courts.
Navy Sampath was arrested earlier this year with regard to the abduction and disappearance of 11 youths.