The two policemen allegedly in an inebriated state started misbehaveing with the shopkeepers and demanded money forcibly, sources said.
This was resented by the shop keepers who beat them up with lathis and sticks, injuring both of them, sources said.
They were later taken to a government hospital for treatment.
Hemant Kumar was later shifted to Jawahar Lal Nehru medical college and hospital after his condition deteriorated.