Chhattisgarh CM Vishnu Deo Sai praised security forces after 31 Naxals were killed in an encounter in Maad area on Narayanpur-Dantewada border. "Our forces have achieved a great success. 31 Naxals have been killed and this time our soldiers have broken the previous record of 29," he said. "Naxalism will certainly end here one day," he added.