Man turns violent in hospital, kills 83-year old     STAFF WRITER 12:19 HRS IST Kochi, Jul 14 (PTI) An 83-year-old patient was killed and three others were injured when a man admitted at a government hospital here allegedly turned violent and went on an attacking spree in the wee hours today. The man believed to be in an inebriated state was admitted to the hospital for fever, hospital officials said, adding that he suddenly became violent and started attacking other patients in the ward.