Six Naxals were killed and eight others were arrested after an encounter with security forces in Darmaha village in Bihar's east Champaran district in the wee hours of Monday.
The over 12-hour-long encounter ended at 4 am on Monday, Director General of Police Neelmani said.
The bodies of all the six Naxals have been recovered and eight left-wing ultras, including three women, have been arrested.
Security forces have also recovered 14 weapons besides explosives and ammunition from the spot, the DGP said.
A search operation was going on at the encounter site, Neelmani said.