[thisrod]

The details of this are obscure, due to medical privacy, and I don't know more than anyone else.

On the other hand, this isn't the first time that someone has arrived in Australia with a visa, been taken aside at the airport, questioned by immigration officials, and told to leave the country. The usual reason it happens is when the immigration officials suspect that the person told some some fibs on their visa application. To my ears, "failed to provide adequate documentation" sounds very much like a euphemism for "told us a pack of porkies." This would explain the confusion over what the Immigration Department and the Victorian Government discussed after he arrived, and the Victorian Government's rush to distance themselves from him after that discussion.

[thisrod]

This retired immigration official makes a good point: if Djokovic was suspected of doing anything dodgy, there were lots of opportunities to question him before he boarded a plane. To that extent, it's an Australian stuff up. And the immigration authorities are notorious for stuff ups.

https://www.theage.com.au/national/djokovic-farce-at-airport...

More cynically, this is a great opportunity for the most dishonest prime minister, and most corrupt government, in recent Australian history to put on some theatre about their respect for the rule of law.