In February 2014 , Katulkar took over as Principal District and Session Judge , Bilaspur and Special Judge ( NIA ) for state of Chhattisgarh . Katulkar was presiding over trial of 2013 Naxal attack in Darbha valley , in which 29 people were killed by naxals including State Congress President Nandkumar Patel , his son , Former Union Minister Vidhya Charan Sukhla and Leader of Opposition and Salwa Judum Founder Mahendra Karma . In April 2014 , in a major move , he ordered NIA to record voice sample of alleged Mastermind of 2013 Naxal attack in Darbha valley , Gudsa Usendi who had surrendered before Andhra Pradesh Police in Jan , 2014 and induct him as accused in the case . NIA filed the charge-sheet in the case on 26 Sep 2014 . But , Special Public Prosecutor was only appointed in June , 2015
2013 Naxal attack in Darbha valley
2013 Naxal attack in Darbha valley
Mahadev Katulkar