New Delhi: In a joint operation, Chhattisgarh Police and 27 battalion of Indo-Tibetan Police Force (ITBP) killed four dreaded Maoists, including two women, in an encounter inChhattisgarhs Rajnandgaon district late on Friday night. A Sub Inspector of Chhattisgarh Police also lost his life in the encounter. According to the ITBP,