The IRB jawan, Vikesh Kumar, received a bullet injury on his chest and was airlifted to Ranchi, Superintendent of Police Dhananjay Singh said.
Based on information that some ultras had assembled at Hundi village, District Armed Police personnel had rushed to the spot last night.
As soon as the team reached the area, Trutiya Prastuti Committee (TPC) ultras started firing at the police, forcing them to open fire in retaliation, the SP said.
The encounter continued till the early hous today.
A massive search operation is on following the encounter, he said.
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