Steven Avery announced earlier this month that his engagement to Lynn Hartman was over, but it appears he had his lawyer do the dirty work for him. A letter from Avery’s representation Kathleen Zellner has surfaced revealing that she was the one who told Hartman that the relationship was over.

According to In Touch Weekly, Zellner sent a formal notice to the Las Vegas legal secretary telling her that her engagement to Avery had been “terminated” on Oct. 2. “As Mr. Avery expressed to you during your relationship with him, he deems his correspondence and communications with you to be confidential,” the letter read. “This constitutes an oral agreement with him.”

The note also prohibited Hartman from doing any interviews about the “Making A Murderer” star and their brief relationship. “Additionally, you should refrain from selling, distributing, or otherwise disseminate any photographs taken of you and Mr. Avery, and you should refrain from otherwise trying to profit from Mr. Avery’s likeness or your relationship with him,” it stated. “Finally, you should not offer any opinions regarding Mr. Avery’s case, or his guilt or innocence.”

Avery and Hartman were only engaged for a week before they ended things. Avery’s former girlfriend, Sandra Greeman, broke the news of his split in a Facebook post. “Steve called me two times tonight and wants everyone to know that Lynn and him are done,” she wrote. “She has been in this relationship for money and publicity. His eyes are finally opened. … She is a golddigger.”

People magazine reported that Avery’s family had issues with Hartman because they felt she was trying to “cash in by doing interviews.” A source told the outlet, “And now she’ll do even more [interviews] about the breakup.”

Avery, who is serving a life sentence for the murder of photographer of Teresa Halbach, and Hartman got engaged after dating for eight months. Their short-lived romance started after she sent him letters to prison.