RAIPUR, May 13 -- A police constable of Chhattisgarh was killed after he was run over by a tractor which was engaged in illegal sand mining 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. Police said that deceased, constable Shiv Bachan Singh (43), posted at Sanawal police station died during the raid while attempting to intercept a fleeing tractor suspected of transporting illegally mined sand. The IG also suspended Sanawal police station in-charge Divya Pandey for negligence.HTC...