The police and CRPF were on long-range patrol in the Gurabandha jungle, a Maoist-affected area, when they came upon the camp at which the ultras opened fire, police sources said.
The CRPF and police returned the fire leading to a 15 minute exchange, the sources said.
There was no casualty.
The Maoists fled leaving behind utensils, half-cooked food, uniforms and a revolver, the sources said.
Senior Superintendent of Police, Akhilesh Kumar Jha, who rushed to the spot immediately, confirmed the incident.
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