According to Bastar Inspector General (IG) Sundarraj P, the jawans were returning from a joint operation of Dantewada, Narayanpur and Bijapur police when the blast occurred.
The Home Minister also met civilians affected by Naxal violence and while expressing his deep condolences assured them of the unwavering support of the central and state governments.
A woman was strangled to death by Naxalites in Chattisgarh's Bijapur district on the suspicion of being a police informer, police officials said on Saturday.
A joint search operation by the CRPF was launched in Bijapur after receiving information about the presence of Maoists in the Usur-Basaguda-Pamed-Tarrem area on Friday, a statement said.
Chhattisgarh Deputy Chief Minister Arun Sao on Sunday said that efforts of BJP's double-engine government to make Bastar Naxal-free have caused Naxalites to become restless and launch panic-driven attacks.
Meanwhile, the condition of two Narayanpur district police officials injured during an encounter with Naxals on Saturday is improving, the Inspector General of Police (IG) in Bastar Range of Chhattisgarh said.
During a search operation on October 19 carried out in jointly by ITBP and Narayanpur police, Naxals attacked the ITBP Patrolling team and carried out a major IED blast.
Chhattisgarh Congress state in-charge Sachin Pilot launched a scathing attack against the Chief Minister Vishnu Deo Sai-led state government and said that it has been just seven months since the formation of the Chhattisgarh state government but the Naxal attacks have increased.
Chattisgarh Chief Minister Vishnu Deo Sai carried the mortal remains today of the STF jawan Bharat Lal Sahu, who lost his life in an IED attack by the Naxals in Tarrem area of Bijapur district on July 17.
Two personnel of the District Reserve Guards (DRG) were injured in an improvised explosive device (IED) blast by Naxalites in Chhattisgarh's Bijapur district on Thursday, police said.