Some jawans were also reported to be injured in the explosion, but there was no official confirmation yet, he said.
The blast occurred when a team of CRPF's 212th battalion was patrolling in a forest in Kistaram area of Sukma, located around 500 kms from here, a paramilitary official told PTI.
The security men were conducting an area-domination operation in the forest of Kistaram when the Maoists blew up the CRPF's mine-protected vehicle, he said.
The rebels used a lot of explosives to blow up the vehicle, the official said.
Soon after the incident, reinforcement was rushed to the spot, he said, adding that further details were awaited.