In her post, Amir's wife, Larissa Amir Trimbobler, wrote: "Hello everyone. I would like to inform you that a defense team is currently preparing and submitting a request for a retrial of Yigal Amir.
"The move was done with authority and permission after Yigal Amir gave his consent.
"The entire media issue regarding the move will be managed by a Swiss company and no details will be given to the Israeli media."
In a conversation with a Ynet reporter, Trimbobler was asked who were the people helping her and her husband, but she refused to answer.
Attorney Gabi Shachar, who represents Amir, revealed to Ynet that he was the one who actually wrote the post.
"I wrote the post, and what is written there is correct," he said. "We will not give further details. What is written there verbatim is true.
"This is a Swiss company that, after making an informed decision on the matter, decided to handle all media and public relations itself.
"We issued the message so anyone who needs to know will know that this is about to begin."