One of the doctors who was among a team that performed autopsy on 24-year-old Tabrez Ansari, who died after a mob attack in Jharkhand, has said he died of a cardiac arrest. Murder charges against the men accused in the fatal attack on Mr Ansari in June were dropped because the post-mortem report said he died of a cardiac arrest. "It's not my report alone. It was done with a team of doctors," Dr B Mardi, who conducted the autopsy, told NDTV.