: Tennis world number one Novak Djokovic on Sunday began his fourth day in immigration detention as Australian authorities finalised a legal defence explaining their decision to cancel his visa over questions about his COVID-19 vaccine exemption.
The Australian government has said its health department notified Australian Open organising body Tennis Australia last November that a recent COVID-19 infection was not necessarily grounds for exemption in the country, as it was elsewhere. Djokovic's lawsuit says the Department of Home Affairs wrote to him this month to say he had satisfied the requirements to enter the country.
Anti-vaccine protesters, refugee advocates and Djokovic fans have converged outside the modest building, which is under police guard.