The attack took place in the Manpur belt, some 200 km from here, in the district bordering Maharashtra.

Insurgents had killed two DF personnel in a separate incident in the same area this morning.

All top officials, including Chhattisgarh police chief Vishwaranjan, rushed to the site of the attack. The strike has shaken up the police force in the state which has been battling Maoist insurgency since the 1980s.

Chief Minister Raman Singh cancelled his trip to Nagpur scheduled for Sunday afternoon and asked the home department to send choppers to rescue the injured policemen.