The National Investigation Agency (NIA) began investigating the Communist Party of India-Maoist (CPI-Maoist) exchange of fire with Security Forces (SFs), which killed 22 SFs on April 2-3, after taking over case documents from Chhattisgarh Police in June, reports Hindustan Times on June 18. NIA has named some top ‘commanders’ of CPI-Maoistincluding Hidma, Nambala Keshav Rao alias Raju, ‘general secretary’ of the CPI-Maoist, Mupalla Lakshman Rao alias Ganpati, former ‘general secretary’, Venugopal alias Bhupati, Sujata, Nagesh, Prashant and 350-400 cadres in its First Information Report (FIR), said officials.