The gunbattle took place during a combing operation in the Badekakler forest under Farsegarh police station limits last evening, Bijapur Deputy Superintendent of Police Sukhnandan Rathore told PTI.
A joint team of Chhattisgarh Police and Maharashtra Police was carrying out the combing operation in the Farsegarh region on the inter-state border, around 450 km from Raipur, when the Naxals attacked, he said.
After a fierce gun-battle, the ultras retreated to the core area of the forest, the DSP said.
Mandavi was a member of 'Platoon II' of Maoists from 2001 to 2004 and after that he worked as a training instructor for the cadres in Gangalur area of Bijapur till 2009. Presently he was the 'section commander' in 'Military Platoon II' of Naxals.
Mase Telam was a member of 'National Park Area Supply Dalam'. Sannu Udde, who joined the Naxal movement in 2006, was a member of 'Sendra Local Operation Squad' since 2012, according to the police.