The incident took place when they were on an area domination exercise under Chintagufa police station limits, Sukma Additional Superintendent of Police Neeraj Chandrakar told PTI.
Assistant constables Munna Madkam and Anil Samrath were injured in the blast when they were hit by the pressure bomb laid by the rebels, he said.
After being administered first aid at Konta Primary Health Centre, the two policemen were brought to Jagdalpur Medical College, he said, adding one of them has been airlifted to Raipur for further treatment.