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ID105-Disqualified Player Must Remain Silent
Question: Can a player who has been disqualified still declare another player’s hand dead?
Answer: No, a disqualified player cannot declare another player’s hand dead. Once a player’s hand has been declared dead, they are no longer permitted to make any decisions or calls regarding other player’s hands. A disqualified player must remain silent for the remainder of the game after their hand has been declared dead.
Source: Mah Jongg Made Easy (2020 page 31 para. 5)