KOH SAMUI, Thailand—An autopsy showed the death last week of Australian cricket great Shane Warne on an island in Thailand was due to natural causes, the Thai police said on Monday. Warne’s family had accepted the finding and his body would be transferred to Australian consular officials for return to the family, a deputy police spokesman said. “Today investigators received the autopsy result, in which the medical opinion is that the cause of death is natural,” Kissana Phathanacharoen said in a statement. “Investigators will summarize the autopsy result for prosecutors within the timeframe of the law.” Warne’s body would be flown to Australia on Tuesday, Police Lieutenant General Surachate Hakparn told a news conference. The senior police official ruled out any foul play and said Warned died due to a suspected heart attack. The autopsy report showed Warne died of a “congenital disease,” Songyot Chayaninporamet, deputy director of Samui Hospital, …