Marsh "in the fight of his life"

Aussie cricket icon Rod Marsh has been placed in an induced coma after suffering a heart attack on Thursday.

Marsh's son Paul released a statement on Sunday and said his condition was still "critical."

"He is currently in the fight of his life and remains in an induced coma in critical condition," the statement read.

"At the moment this is a waiting game and we are unlikely to have any certainty for some time.

"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."

Marsh played 96 Tests for Australia between 1970 and 1984.

IMAGE: FILE