This is the fourth IED blast triggered by the Maoists in the state in the last 15 days and the sixth attack.
Three of those attacks were major and left 13 people dead, including a Doordarshan cameraman. The Maoists don't usually attack journalists but the cameraman and his colleagues had been travelling with security forces.
They were in the state to cover the elections.
Chhattisgarh will go to the polls over two phases — tomorrow and on November 20. Some 1 lakh security personnel have been deployed in the state for the polls.