Rohit Sharma, 4 other Indian cricketers put in isolation as BCCI, CA investigate possible protocol breach 

The players – Rohit Sharma, Rishabh Pant, Shubman Gill, Prithvi Shaw and Navdeep Saini – have been separated from the Indian and Australian squads but will still train "in accordance with the strict protocols that have been put in place to ensure the ongoing safety of all members of the Indian and Australian squads," said a Cricket Australia statement.

"The BCCI and CA are investigating the matter and seeking to determine whether the outing constitutes a breach of biosecurity protocols," read the statement.

"In the interim, on the advice of the Australian and Indian medical teams, the aforementioned players have been placed in isolation as a precaution. This will include separating the group of players from the broader Indian and Australian squads when traveling and at the training venue," the statement said.

The Test series between India and Australia is being played amid a backdrop of biosecurity rules.

Players and staff are permitted to leave the hotel but must dine outdoors during the Melbourne leg of the tour, reports Cricket Australia.

Vodafone Test Series v India 2020-21:

Australia Test squad: Tim Paine (c), Sean Abbott, Pat Cummins, Cameron Green, Marcus Harris, Josh Hazlewood, Travis Head, Moises Henriques, Marnus Labuschagne, Nathan Lyon, Michael Neser, James Pattinson, Will Pucovski, Steve Smith, Mitchell Starc, Mitchell Swepson, Matthew Wade, David Warner

India Test squad: Virat Kohli (c) (first Test only), Ajinkya Rahane (vice-captain), Rohit Sharma, Mayank Agarwal, Prithvi Shaw, KL Rahul, Cheteshwar Pujara, Hanuma Vihari, Shubman Gill, Wriddhiman Saha (wk), Rishabh Pant (wk), Jasprit Bumrah, Mohammed Shami, Umesh Yadav, Navdeep Saini, Kuldeep Yadav, Ravindra Jadeja, Ravichandran Ashwin, Mohammed Siraj

First Test: Australia won by eight wickets

Second Test: India won by eight wickets

Third Test: January 7-11, SCG, 10.30am AEDT

Fourth Test: January 15-19, Gabba, 11am AEDT