Shane Warne suffered chest pains before he travelled to Thailand for a holiday, where the cricket great died from a suspected heart attack on Friday, Thai police say.
Citing information from his family, police said on Saturday Warne, 52, also had asthma and heart issues and his death on the island of Koh Samui is not being treated as suspicious.
Warne was staying in a private villa with three friends, one of whom performed CPR after finding him unresponsive when he did not show up for dinner.
His body is to be transferred to the Thai mainland for an autopsy on Sunday.
Newspapers, celebrities, politicians and adoring fans lined up to recall their memories of the legendary leg spinner after the shock news of his death.
Others left flowers, meat pies, beers and cigarettes at his statue outside the Melbourne Cricket Ground, where the southern stand will be renamed the S.K. Warne Stand in his honour.
The Victorian and federal governments have both offered a state funeral to his family, which includes Warne’s daughters Brooke, 24, and Summer, 20, as well as 22-year-old son Jackson.
“Nobody who saw Shane Warne play will ever forget him,” Victorian premier Daniel Andrews said on Saturday.
“To us, he was the greatest – but to his family, he was so much more.”
Hollywood star Russell Crowe tweeted he was having a hard time accepting the news.
“Genius player. Grand company. Loyal friend,” he tweeted.
Rolling Stones frontman and passionate cricket fan Mick Jagger tweeted: “He brought such joy to the game and was the greatest spin bowler ever”.
Prime minister Scott Morrison offered his condolences to the Warne family in a written statement.
“Shane was his own man, following his own path,” Mr Morrison said.
Australian officials arrived in Thailand on Saturday to assist Thai authorities and help arrange the repatriation process.