Australian cricket legend Rod Marsh is in the "fight of his life" after being put into an induced coma following a major heart attack he suffered on Thursday.
The 74-year-old was taken to hospital after his heart stopped while he was in Bundaberg to attend a charity event.
In a statement released by his family on Sunday, Marsh's son Paul said his father's condition was "critical".
"He is currently in the fight of his life and remains in an induced coma in critical condition," the statement read.
"We know there is a lot of interest in dad's condition and our family has been overwhelmed by the messages of love and support from all around the world.
"We have listened to and read every one of them, and we are incredibly grateful to everyone."
Australian Test captain Pat Cummins was told the news of Marsh's condition when he addressed the media upon his team's arrival in Pakistan for their six-week tour.
"We just really feel for the Marsh family and the kids," Cummins said.
"We obviously wish him the best because it's a really tough situation."
Marsh played 96 Tests for Australia between 1970 and 1984 and later served as a national selector until 2016.
AAP/ABC