Hyderabad,Nov 17: A Sub-Inspector attached to the Malakpet police station in Hyderabad city was injured when his service revolver went off accidentally on Tuesday morning.The Sub-Inspector, Mr Satyanarayana, was deeply hurt in his right thigh as his service revolver went off.The revolver was not locked when it accidentally got fired, the police said. An injured Mr Satyanarayana was rushed to the Malakpet Yashoda Hospital by his colleagues where the doctors said that they were removing the bullet and that he would be discharged after a couple of days on treatment.