Naxals on Wednesday fired at a CRPF camp in Hazaribagh, injuring a jawan.
The Naxals fired at the 'E' company camp of the 22nd battalion of the force located in Vishnugarh village of the district at around 0400 hrs.
CRPF personnel fired back. Constable Mukesh Kumar received minor injuries in the exchange of fire, senior officials said.
CRP personnel found blood stained clothes and ammunition from outside the camp which were probably left behind by the injured Naxals, they said.
The force has launched a hunt to find Naxals in the nearby areas.