The Twenty20 World Cup may not go ahead as the leader of the game in host nation Australia revealed the schedule for October and November is under a "very high risk".

Australia has announced its schedule for its international season, including a full tour from India and an inaugural Test against Afghanistan, though October's Twenty20 World Cup appears likely to be postponed.

Cricket Australia (CA) boss Kevin Roberts indicated as much in a video call with reporters, saying "obviously, we've been hopeful all along that it could be staged in October-November but you would have to say there is a very high risk about the prospect of that happening".

In a packed calendar there is also set to be a Twenty20 series against the West Indies and a limited-overs rubber against neighbours New Zealand. Australia's women are due to play nine white ball matches against New Zealand and India.

Mr Roberts said CA was "exploring all options" as it prepared for the season including chartering flights from other countries into Australia, creating biosecurity "bubbles" at different grounds and using only one or two venues for matches.

Australia are due to contest a five-match ODI series in England this summer but no agreement has been reached on whether or not that will go ahead.