Bobbi Kristina cause of death revealed..she died from a combination of alcohol, drugs and drowning A U.S judge yesterday ruled that the autopsy report for late Bobbi Kristina Brown must be unsealed after a request by a news agency, WXIA, who wanted the records for a report on the heroin epidemic in Bobbi Kristina's upscale Atlanta neighborhood.. and now, the cause of death has been revealed... According to the coroner, Bobbi Krisinta died as a result of 'Immersion of face in water complicating mixed drug intoxication." "The drugs involved included marijuana, alcohol (ethanol), benzoylecgonine (a cocaine-related substance), benzodiazepines (medications used for sedation or to treat anxiety), and morphine." "It could not be determined from toxicology tests whether the morphine resul