Australia captain Steve Smith, vice-captain David Warner and batsman Cameron Bancroft will be sent home from South Africa for ball-tampering in the third Test in Cape Town.
However, Cricket Australia chief executive James Sutherland says head coach Darren Lehmann was not involved in the controversy and will remain in his post.
Sutherland added that the sanctions to be handed down to Smith, Warner and Bancroft within the next 24 hours will be "significant".
He said: "It is not in the spirit of the game. It is not a good day for Australian cricket."