Shane Warne's heartbroken family in shock

Shane Warne's family have detailed the "never-ending nightmare" they're enduring following the spin king's sudden death on Saturday.

Warne's body is expected to be transferred back from Thailand to Australia on Tuesday after an autopsy confirmed he had died of natural causes.

The news came as Warne's family spoke for the first time, with his parents, brother, three children and ex-wife leading tributes to the cricket legend.

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In a moving statement, Warne's parents Keith and Brigitte said life without their son was "inconceivable", while youngest daughter Summer yearned for "more family holidays" together.

"Dad, I miss you so much already. I wish I could've hugged you tighter in what I didn't know were my final moments with you. And your final breaths were only moments away," Summer, 20, said in the Warne's family statement released on Monday night.

"I wish I could've told you that everything was going to be okay and hold your hand. You are the best Dad someone could ever ask for.

"Our time was robbed. I want more holidays with you, more laughs where your smile lights up the whole room.

"More "good night I love you SJ, I'll see you in the morning", more talks about how our days were and just to feel safe when you would hug me and you would let me know how proud you are of me and how much you love me.

"You haven't died Dad, you've just moved to a different place, and that is in our hearts. I love you forever, until we meet again."

Warne's 22-year-old son Jackson described his father as his "brother, my best friend".

"Dad, I love you so much. I don't think anything is ever going to fill the void you have left in my heart," he said.

"Sitting at the poker