The incident took place near village Paknabhatti, one kilometre away from Korchi taluka headquarters, a release from the district police superintendent's office said.
Assistant Police Inspector Atul Tawde and Assistant Sub-Inspector Rajesh Chawar were removing a banner put up by the Naxals near a culvert on Paknabhatti road.
As they were taking off the banner, a pressure bomb connected to it went off, injuring both seriously.
The two were shifted to Nagpur by helicopter and their condition was stable, the release said.
Naxal activities are occasionally reported from the district which borders on Chhattisgarh.
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