Thomas Martin was indicted for securities law violations. After Martin hired an attorney to represent him on the indictment, he sent a text message to his attorney explaining his actions. Martin copied his daughter on the text message. During the discovery process, the prosecutor requested that Martin produce all written communications authored by him relating to the stock transaction at issue. Martin claims that the text message to his attorney is a privileged communication and that he is not required to produce the text message to the prosecutor. Must Thomas Martin produce the text message? Explain your answer.