The encounter took place in a dense forest in the insurgency-hit Sukma district of Chhattisgarh, located around 500 km away from the state capital Raipur.
In Kistaram police station area, the gunfight took place last night when a team of CRPF's 212th battalion was out on a search-cum-area domination operation, Deputy Inspector General of Police (South Bastar Range) Sundarraj told PTI.
"Assistant Sub Inspector (ASI) Anil Kumar Maurya was killed in the incident," he said.
Maurya was a native of Madhya Pradesh.
Security forces have launched a combing operation in the area.