The IED blast was blamed on left-wing rebels "Naxals."
The incident happened in the state's Raoghat area of Kanker district while a BSF team was on a search operation to flush out the armed rebels.
In all eight teams were constituted to carry out the anti-Naxals operation for three day/nights beginning Tuesday.
"Today at about 16:05 a series of IEDs blasts followed by heavy volume of fire were caused by Naxals. The BSF party took position and retaliated effectively causing heavy casualties to the Naxals," said the official sources.