"Some people from the procession hurled stones at the police men, and the police fired shots in the air to disperse the mob at a village under Birni police station," Deputy Superintendent of Police R K Mehta, who was among the injured, said.
Sub-divisional officer P K Mandal, Birni police station in-charge Rana Pratap, nine other policemen and two villagers were injured in the clash, he added.
It is not immediately known whether the two villagers suffered injuries from stones or bullets, police said.