Firing on security forces by the rebels triggered the gunbattle, which left one Naxal dead, he said.
The ultras later escaped from the spot, from where the Naxal's body was recovered, Nayak said.
A combing operation was underway in the area, around 300 km from state capital Raipur, the IPS officer said.
The Naraynpur assembly segment falls in the Bastar Lok Sabha constituency where polling was held Thursday.
Voting in the assembly segment ended at 3 pm after which polling personnel from interior pockets were airlifted to Naraynpur town by helicopters.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)