RAIPUR, May 13 -- A police constable in Chhattisgarh was killed after he was run over by a tractor in Balrampur district, police said on Monday. The incident occurred during a police and forest department raid near the Kanhar River, a known hotspot for illegal sand mining along the Chhattisgarh-Jharkhand border, police added. Inspector General of Police, Surguja range, Deepak Jha said that the accused were from Jharkhand. " We have detained a couple of persons but the main accused who was driving the tractor is still at large. The hunt for the accused is going on," said the IG. HTC...