Three civilians and a CISF jawan were killed on Thursday when suspected Maoists blew up a bus with an improvised explosive device (IED) in poll-bound Chhattisgarh's Dantewada district, police said.
Two personnel of the CISF were also injured in the incident, Dantewada Superintendent of Police Abhishek Pallava told PTI.
The explosion took place in a hilly area in Bacheli in Dantewada when the personnel were returning to their camp after purchasing groceries from a market, he said.
The civilians killed in the blast included the bus' driver, conductor and cleaner, Pallava said.
A week ago, a Doordarshan journalist and two security personnel were killed when Maoists attacked a patrol unit in Dantewada.
The personnel belonged to a CISF unit that had been deployed in the area for the first phase of the forthcoming polls in the state.
Assembly elections are scheduled to be held in Chhattisgarh next week in two phases on November 12 and November 20.
The first phase is to be held in the Maoist-affected constituencies of Bastar region that falls in the southern part of the central Indian state.
