The skirmish took place in the forests under Tongpal police station limits when a joint team of state District Reserve Group (DRG) and Special Task Force (STF) was carrying out an anti-Maoist operation in the region, Sukma Additional Superintendent of Police (ASP) Santosh Singh said.
While the security forces were cordoning off a forest axis at Kunna, a group of armed Naxals opened fire on them following which a gun-battle broke out between the two sides, he said.
However, after a brief exchange of fire, the ultras fled into the core forests, he said.
"A constable of DRG sustained bullet injuries in his leg in the incident," the ASP said.
Reinforcement was rushed to the spot and the injured personnel were taken to Jagdalpur district headquarters for treatment, he said.
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