The Indian Premier League has confirmed two positive coronavirus cases in the Kolkata Knight Riders squad, forcing Monday's game against Royal Challengers Bangalore to be rescheduled.
Varun Chakravarthy and Sandeep Warrier both tested positive for COVID-19 and are now isolating away from the squad.
The rest of the Knight Riders' group returned negative results, though a daily testing schedule has now been put in place to quickly identify any further cases that occur.
No new date for the round-robin game against the Royal Challengers has been announced.
India has seen a sharp rise in COVID numbers in the country in recent weeks, with the total number in excess of 19million since the start of the global pandemic.
However, this is the first time there have been confirmed cases within the IPL bubble. The Twenty20 tournament returned to India this year after the 2020 edition was staged in the United Arab Emirates.
"Varun Chakravarthy and Sandeep Warrier were found to be positive in the third round of testing in the last four days. All other team members have tested negative for COVID -19," a statement on the IPL website read.
"Both the players have isolated themselves from the rest of the squad. The medical team is in continuous touch with the duo and are monitoring their health. Meanwhile, the Kolkata Knight Riders have now moved towards a daily testing routine to identify any other possible cases and treat them at the earliest.
"The medical team is also determining the close and casual contacts of the two positive cases during the 48 hours prior to collection of the sample that returned the positive test results.
"The BCCI (Board of Control for Cricket in India) and the Kolkata Knight Riders prioritise the health and safety of everyone involved and all measures are being taken in that endeavour."
Kolkata sit seventh in the IPL table after two wins in seven games. They lost by seven wickets to Delhi Capitals in their most recent outing, which took place last Thursday at the Narendra Modi Stadium in Ahmedabad.