Thai police say Shane Warne's autopsy shows the cricket great died of natural causes.
Deputy spokesman Kritsana Pattanacharoen said the autopsy report had been received on Monday afternoon and concluded that Warne had a "natural death". The Thai police have informed his family and the Australian Embassy.
The police will now report to the prosecutor to close the case.
The Australian ambassador on Friday thanked the Thai police and the relevant department for investigating the 52-year-old's death.
Earlier, a German woman was questioned by Thai police after she broke into the back of an ambulance carrying Warne's body off the island of Koh Samui.
Warne's body was taken by ferry from Koh Samui to Surat Thani on the mainland on Sunday and taken to a local hospital where an official autopsy was conducted. His remains are now expected to be prepared for air transfer to Melbourne.
ABC reported that Warne's body was accompanied by his friends, as well as the Australian ambassador to Thailand, Alan McKinnon, and officials from Defat, but they were not with the van when the car was parked on the ferry.
ABC video footage shows a white woman talking to local immigration officials from a car ferry with a Thai woman.
The couple was then taken to an ambulance parked on the ferry, where the white woman with flowers approached the driver's window. They had a brief exchange before the van was taken to the other side and he was allowed inside for less than a minute.
The woman reached the local police station on Monday morning and talked to the police superintendent.
McKinnon had earlier told the media that Thai police and hospital staff were helping to bring Warne's body back to Australia as soon as possible. "They have been very kind, very efficient and very understanding," he said.
The 52-year-old Australian was found unresponsive at his villa at around 5.15 pm on Friday after he did not turn up for dinner with friends as scheduled.
One of the paramedics called to the scene on Friday described how Warne's friends tried desperately to revive him by performing CPR.
Warne was later pronounced dead at a local hospital and Bo Foot police confirmed his death shortly afterwards.
Bo Phut police station superintendent Yutana Sirisombat said Warne was suffering from chest pain before reaching Thailand. He also had asthma and had seen a doctor about his heart.
Warne went to a local tailor before his death. Parshuram Pandey on Monday said the former cricketer was "happy and playful" to see him for the first time in two years due to the Covid pandemic.
"His body looked the same, he's a player, he looked fresh," Pandey told the Guardian.
"He was funny. He played belly punching with me. He was a nice guy. He smoked. He didn't smoke before but this time I saw him smoke. I don't know what happened to him. I don't know. He Feeling strong. I heard it was a heart attack."
The tailor said he was due to fit in with Warne at his villa on Saturday, but would now "leave his suite at the hotel".
The Sporting News chief executive Tom Hall has revealed that Warne's last meal was a plate of Vegemite toast that was shared with a friend at a Thailand resort, where he died hours later.
"I've dined with Shane at several fine establishments, but instead of sampling some of the local Thai food, we tucked into a plate of Vegemite on toast," Hall wrote in an article on the outlet's website.
"Shane chomping away: 'Geez, you can't beat Vegemite with some butter, wherever you are in the world, always great'. An Aussie through and through - this was her last meal."
Police help that there are no suspicious circumstances surrounding Warne's death, which is believed to have been caused by a heart attack. Police are expected to reveal details of the autopsy after Monday night Australian time.